Mio LINK, Bluetooth optical pulse sensor and ANT+ | Full analysis


Cambiar idioma

The Mio LINK bracelet is one of those new products that will soon change the world of running and fitness watches. Or at least its technology. And there is no need to look to the future because, in fact, it is already doing so. GPS watches TomTom Runner Cardio This bracelet was launched shortly after the first model of Mio with this technology, the ALPHA. The most criticized thing in that device was the price, and after the elimination of the screen is no longer a factor against this new bracelet.

Before we get on with the analysis, I would like to clarify that the test device is a store-bought unit. Therefore, it is not a special demonstration unit with a careful eye on quality. It is simply the sensor that you and I can buy in any store, with the same accessories and presentation.

Remember you can buy it on Amazon through this linkThis way you will generate a small commission that will help the development of this page, and you will be able to see more tests and analyses like this one.

MIO, a little history

Mio ALPHA became the first heart rate monitor for athletes that did not use a chest strap. It was a sports watch that marked the heart rate and took its measurement directly from the wrist. This avoids the discomfort that many athletes have typically encountered with the chest strap, such as chafing, burns or readings that are not always correct when losing contact or being affected by the weather (dry environment, low temperature). Its initial launch was made possible thanks to the "crowdfunding"through the platform KickstarterThey needed $100,000 to make the dream come true, but they got more than three times that amount: $321,314. Thus was born ALPHA, the first heart rate monitor that can be placed on the wrist and that offers electrocardiogram accuracy.

Mio LINK is the logical evolution, eliminating the screen to reduce cost and positioning itself as the replacement of our usual chest strap, allowing to connect with any equipment that has ANT+ or Bluetooth 4.0 technology.

 How does the technology work?

Mio LINK uses an optical sensor to monitor the pulse, simply by placing the bracelet on your wrist, no matter which one. Thanks to two LEDs, it emits an intense light that allows the optical sensor to read your pulse.

MIO Link 6

The way it works really shouldn't surprise you. If you think about how you check your pulse in a hospital, you only have to think about the "clip" they usually put on your finger. What is the great novelty of Mio? It allows you to take this reading not only while standing still, but it works the same whether you are sitting, jumping, doing any physical activity or running (even at high speed).

Compared to a chest strap, it's much more comfortable, both to wear and to use. Something as simple as putting on a watch. You don't need to wet anything, there are no problems reading in the cold, it doesn't cause scratches or burns. And it doesn't have to be totally tight in a way that is uncomfortable to wear. It's enough that the light doesn't enter under the bracelet, which could confuse the optical sensor.

Its placement is slightly above where we place the watch, above the wrist bone (precisely to ensure that no gap is created where any kind of light can pass through).



MIO Link 1MIO Link 2

Mio LINK can be purchased in two different sizes, the S-M and the L. The device is the same, but changes the length of the strap. Two colours are also available, in grey and white. The one I have for this test is the grey one, with the strap in size L. The advantage is that this strap is very easy to replace, so if the strap breaks or we need a different size, we don't have to change the whole device.

The contents of the box are very brief, and we will only find the Mio LINK inserted into the strap and a magnetic charger, plus the corresponding instruction manual.

MIO Link 4

As you can see, the unit itself is quite small. At the top we find the on/off button, and to its right the multicolor status LED (I'll talk about this later). Below, besides finding the icons of the types of connectivity it supports, is its heart. Two high-powered LEDs flank the optical sensor that will provide all the magic.

MIO Link 7   MIO Link 8

The charging system is very convenient and practical. It allows the Mio LINK to be charged inside or outside the wristband, just place it on the charging base, which has magnets to hold it in place.

MIO Link 11    MIO Link 12

It can even be left charging in the air with the strap on, which will not fall off. The same magnet holds the USB connector in place once the cable is folded back, placing it under the charging unit, making it fully retractable and very easy to store. A truly ingenious design.

MIO Link 10    MIO Link 9

Mio LINK and connectivity: Bluetooth Smart and ANT+ simultaneously

Another great possibility that Mio LINK offers is to double your connectivity. Originally, Mio ALPHA was offered in two variants, Bluetooth Smart and ANT+. But LINK offers both types of connectivity on the same computer, which is a significant savings for those of us who like to train with different devices. Personally I usually wear a watch with ANT+ connectivity when I train outdoors, and I use Bluetooth 4.0 connectivity and a mobile phone for indoor activities. With Mi0 LINK these two possibilities are covered.

In addition to offering two types of connection, it does so simultaneously. This means that we can connect two devices at the same time, receiving the pulse information on both.

Mio LINK ANT+ and Bluetooth Smart
Mio LINK connected via ANT+ to Garmin watch and via Bluetooth to iPhone, simultaneously.

To give an example, we could connect the heart rate monitor to a Garmin bicycle computer, where we could see the heart rate, and at the same time connect via Bluetooth to a mobile phone to record the route.

Another thing to keep in mind is that ANT+ allows us to multi-connect between devices. That is, we could connect Mio LINK to several devices, for example a watch and a bicycle computer, simultaneously. This is something that Bluetooth 4.0 does not allow to do, since it is only possible to connect it to one device.

Zone training made easy

The Mio LINK, in addition to sending our heart rate information to other devices, also has an LED on top. This LED is multicoloured and configurable.

After turning the device on, the light indicates the battery status (blue charged, yellow below 30% while two red flashes means battery too low), but thanks to the phone application we can configure this light to show us information while using it. These are the colors it will show us if we configure the five zones:

  • Cyan Blue: 0%-50%, rest
  • Blue: 50%-60%, heating
  • Green: 60%-70%, fat burning and background
  • Yellow: 70%-80%, aerobic fitness
  • Purple: 80%-90%, intensive anaerobic training
  • Red: 90%-220ppm, maximum performance

By default, these colors indicate the work zones where you will be training and based on your minimum and maximum pulse values that you will enter yourself, but you can configure it to your liking.

So, if all you want to do is monitor your heart rate to make a training plan without needing route recording, current pace GPS information or any other data, Mio LINK can be used as a fully autonomous device without connecting to anything else. Only by monitoring the blinking we will know which zone we are in.

And even if we have it connected to a clock or phone this light is really useful, as I could check in the 29th Marbella Half MarathonMany times he did not even look at his watch, for looking sideways at the bracelet and seeing the colour in which it blinked he knew whether he could or could not increase the rate.

So, can you replace the chest strap?

In all the tests I have done with Mio LINK, it has proved to be totally reliable. The pulse data it gives is always the same, very similar to that given by a chest strap.

Mio LINK, simultaneous connection
Comparing readings, Garmin with chest strap and iPhone connected via Bluetooth to Mio LINK

To see it, nothing better than a multi output chart in continuous comparison.

Start 1 - 1h20m continuous race

The first test carried out was a continuous-paced start, with few slopes and maintaining a constant pace. Both exercise cards show an average heart rate of 146 ppm with a maximum of 160 ppm

Image 1: Garmin 410 with chest strap (Garmin premium soft strap)

Output 1, Garmin graph

Image 2: Mio LINK connected via Bluetooth to Android phone with Runtastic app

Output 1, MIO graphic

Figure 3: Overlay of the two graphs, in blue MIO graph, in red Garmin graph

Output 1, graphs compared

Both graphs are very similar, the only difference is that the Garmin graph has more saw teeth, probably due to the way Runtastic records the data. In both cases and during the same race, the information received would be the same.

Departure 2 -1h30m bicycle ride

A slightly different test, this time changing the sport: bike ride. I looked for changes of pace, ups, downs and jumps to see if Mio LINK moved from its place and stopped giving pulse information. At no time was the transmission cut off. The average pulse in both records was 134 ppm, while the maximum was 162 ppm in the recording made by Garmin and 163 ppm in the combination of Mio LINK with Wahoo fitness.

Image 1: Garmin 410 with chest strap 

Output 2, Garmin graph

Image 2: Mio LINK connected via Bluetooth to iPhone with Wahoo Fitness app

Output 2, Mio graphic

Figure 3: Overlay of the two graphs, in blue MIO graph, in red Garmin graph

Output 2, graphs compared

This test was harder for both contestants. The first few minutes of training are not decisive, as I was not wearing my Mio LINK strap properly. As you can see from the overlay chart, the first few minutes were not giving the same readings. But after I stopped to adjust my strap (you can see the drop in heart rate), the chart again developed in a very similar way. This time there are some blips at very specific moments, especially from the reading of the Garmin.

The graph in minute 43 is striking, because after a couple of minutes I stopped the graph. Garmin scores 5 ppm more than Wahoo's app, but nevertheless the Mio LINK and Wahoo are more realistic in the fall of keystrokes, because while Garmin records a full minute at 105 ppm stable, Mio LINK scores more variations and makes the graph descending and then going back up again. A much more realistic behaviour.

Except for very specific moments, we can see that both graphs follow the same movement and are constantly traced.

Output 3 - 2h15m continuous stroke (XXIX Marbella Half Marathon)

In this case there is no comparison with any other device. I only had the Mio LINK connected to the Garmin 410 through ANT+. But it does serve to check how, when connected by ANT+ to the Garmin 410, the saw teeth are continuous, unlike when it was connected by Bluetooth with the Runtastic app.

Half Marathon Graph, Mio LINK + Garmin 410


The question initially posed is: Can Mio LINK replace the chest strap? The answer is that it canNot only can I, but I am sure that in a few years, this type of sensor will be the most common in heart rate monitors of all brands, leaving the chest straps to be relegated to very specific uses.

Mobile application. iOS and Android

Mio has apps for both major mobile phone platforms, but the two are quite different. While the Android app is only useful for initial zone setup, the iOS app is somewhat more comprehensive. But since the main purpose of use is to connect your Mio LINK to specific running applications or sports watches, this is not something to worry about. The app is actually meant to be used for initial setup and then completely forgotten about. However, Mio indicates on their website that they are working to provide the same functionality on Android that the iOS app has.

Mio GO for Android

We start with the simplest application, so simple that it is explained in very few images. As soon as the application is opened, it will ask us to connect to the Mio LINK bracelet.

Mio GO Android, capture 0

Once connected, it shows the main screen of the application. The on-screen pulse assures us that the connection has been made, and we are presented with three options: Entering personal information, configuring 3 alert zones or 5 training zones.

Mio GO Android, capture 1       Mio GO Android, capture 2       Mio GO Android, capture 3

And this is all the application has to offer. It's enough for the initial configuration, but I'm sure that once you've configured the zones as you wish, the next thing you'll want to do is remove the application, since you won't be using it for much longer. As the wristband doesn't have any activity memory, for the moment the application doesn't offer any other use.

Mio GO for iOS

From the start, the main screen is much more complete than its Android counterpart. Activities, indoor and outdoor training options, connection management... In this image the Mio LINK wristband is already connected, but we would only have to go to the top right to enter the connection menu, which is the one presented on the right. As in the previous case, we have information about current keystrokes and configuration options.

Mio GO iOS, Catch 1      Mio GO iOS, catch 2

After selecting "SETUP MIO LINK" 1TP10We can configure, as in the Android application, the warning zones or training zones.

Mio GO iOS, catch 4      Mio GO iOS, catch 3

So far, except for the main screen, both applications are exactly the same. If we click on the lower left of the main screen, we will be presented with this screen, where we can start recording a workout. It will not save GPS information or show the pace or any other feature we usually see in any other running application.

Mio GO iOS, catch 5

The most complete part corresponds to "indoor" training. Here we enter a section of the application intended for simulation, through fitness games. We can train on a treadmill or a spinning bike, for example, and from the information presented we can perform our training in a more fun way. When a type of exercise is selected, podremos download the activity (at no cost). As you can see, the downloaded files occupy quite a lot, as the running activity selected for download is 763 MB.

Mio GO iOS, catch 6       Mio GO iOS, catch 7      Mio GO iOS, catch 8


It is very easy to summarize this entry of more than 2,200 words. Probably your question when you get to this point is: is it worth it? The answer is very easy to give, YESYou could consider the Mio LINK bracelet as a 10 product if you took away 30 euro from the price (its retail price is 99,95 euro). But it's not expensive either. If we analyze the market, we see that the usual price of a good quality chest strap with ANT+ connectivity is around 50 euro. The same can be said for Bluetooth transmitters. Mio LINK offers double connectivity and it's certainly more comfortable to wear than any other chest strap.

Its performance has been outstanding in all tests, it takes up very little space in any runner's backpack and it simply does what it promises. If I have to put my foot down, the truth is that it's hard to find one. The Android app is somewhat more limited than the iOS app, but I find it hard to understand why this is an important point in the purchase decision. The only thing I could criticize is the lack of a Windows Phone app for configuring the zones, although we can use Mio LINK with any application that supports Bluetooth connectivity meters (adidas miCoach, for example).

Did you like the test?

I hope you enjoyed this complete review. It took quite a few hours to put it together. If you liked it and want to help, just comment below what you thought of the test, or ask your questions, as I may have left something along the way. Comment on this post with your friends and share it on your social networks. If you are encouraged by the purchase of the device, you can do it through this link on Amazon, or at this link if you want to buy it from their official website with free shipping. This way it will cost you the same or cheaper than the official price, and I get a small commission that will help with the purchase of new devices for new tests.

Buy Mio Link

You can buy the Mio Link in different colours and I have provided links and different prices below, as the offers often vary from country to country.


Operation - 10
Design, finish and comfort - 10
Battery life - 10
Mobile Applications - 7.5
Connectivity - 10
Price - 8



User Rating: 3.86 ( 9 votes)

Eduardo Mateos

I've been surrounded by electronic devices of all kinds for more than 25 years. Using them, testing them, taking them apart and dissecting them. Long distance triathlete: I swim, run and cycle for a long time. Maybe too much.

Related posts


  1. Hello,

    Congratulations for the entry, I think you have answered almost all the questions that someone may have about this product.

    I'm a blind person and I'm tired of using and trying different breast bands with different applications and the truth is that none of them have convinced me. The one that worked best for me was Adidas, but I didn't like it either.

    I've been looking for a wrist pulsometer for a long time, I'm spinning at home and I want to check my heart rate.

    Do you know if it is possible to see in real time the keystrokes you have in any iPhone application? I thought I understood that in the Mio Go application you can, but do you know if it is compatible with any other application?

    Thank you very much and I reiterate my congratulations.

    1. Hello Jose Maria

      Yes, the Mio LINK can be connected to any iPhone application that supports an external Bluetooth pulse sensor. In addition to the Mio GO, which is the brand's own, you could connect it to Runtastic (in its Pro version), Wahoo Fitness, Endomondo, etc. Simply pair it with the application and you can start your workout.

      And thank you for the congratulations.


  2. Hello Eduado a doubt I had about your excellent opinion of the pulse meter, well, two, I wonder how long autonomy has my link more or less taking into account the use for three to four days of training commonly, and if we put the autonomy also of the M400 I've seen in the other team.
    On the other hand, and purely for comfort, I wonder if you don't mind wearing it next to the clock so close together and if it can make an impact on the other mechanism and bother you or even press some button on the adjacent clock mechanism.
    Greetings and thanks for sharing.

    1. Hello, John.

      I have never run out of battery power in continuous use, and I have been using it alternately lately, as I have gone out with the Fenix 2 HRM-Run in many training sessions.

      I calculate that I make a charge a week, without being the battery exhausted. That is to say, 4 trainings and in time are about 7 hours of use, still remaining some battery.

      The range of the M400 using the GPS is more or less on par. That's about 7-8 hours of continuous use. Come on, you could charge them both at the same time.

      The Mio Link's strap is made of soft silicone, and it's also quite low profile, so you can wear your watch on one wrist and your Mio Link on the other without any problem. Being on the same arm doesn't bother me, of course there have been days of going out with two watches and Mio Link on the same wrist, so maybe I'm not the best person to give references, as I'm used to wearing A LOT of things for testing purposes.

  3. Good one.

    Thanks a lot for the reviews you do that come in handy for all of us. That's the first thing

    I have my link and the truth is that it is a jewel. Good autonomy and very good pulses. With respect to a polar m400 and its H7 tape there are hardly any variations

    I was going to the gym with my H7 treadmill and I was getting my heart rate on the m400 and on the spinning bike, on the treadmill... and it was very comfortable because I was barely looking at my watch.

    However, now with mine I have to constantly look at my watch because the devices do not mark it, and that was supposed to have Ant + and smart Bluetooth could access both at the same time ...

    Do you know anything about it?

    The other thing, which is bullshit, is that the app mio go for iOS does not show the training download. At least in the latest version

    Thanks a lot for everything and congratulations on your sub 48!

    1. Hi, Curro.

      The machines in the gym detect the Polar H7 because in addition to Bluetooth, it has 5Hz analog connectivity (which is the frequency the machines will use, if they are somewhat old).

      In other words, the machines have neither ANT+ nor Bluetooth, which is what Mio Link uses.

      As for the iOS application, you leave me with the doubt, but I don't have an iPhone at hand right now to check it out, so let's see if I can remember it later when I get home.

      Thanks for the congratulations ;-).

  4. Hello, a few months ago and thanks to this web-blog I got excited and finally I have the Mio bracelet.
    After some reasonable training I can be satisfied with the use of the device and of course forget about the uncomfortable chest pulse meters that so many sores have left me (especially in summer) and at the level of pulses I give total credibility.
    Regarding the configuration of the application via software I'm totally unhappy because I still can not configure it, why? have removed the application for android and unfortunately I have no one close with iphone phone to perform its implementation.
    As a consequence I use it as a passive pulse meter linked to the GPS clock but far from the configuration you propose since someone thought of removing it from android.
    So, here you have the opinion of a feisty trotter, either as a passive pulse meter but it could be much more personalized.
    Greetings and best wishes from many trainings and km.

      1. My joy in a well, I tried again with the link that I have done well to share and is not compatible with my phone, I guess that's why it did not appear in google play, and I tried two devices, one fnac5 and another lg less than a year old and neither of the two even let us install, not if you've had occasion to talk to more users and has happened to them the same.
        Well, a greeting and thanks again, today to rest and tomorrow to enjoy the sansilvestres.

        1. In order to use Android with Bluetooth Smart devices you need two things

          - That the phone has Bluetooth 4.0.

          - That the phone has OS version 4.3 or higher.

          The Fnac 5 (BQ Aquaris 5) has Bluetooth 4.0, but it came with Android version 4.2 as standard, so you need to upgrade to the latest version.

          Here is more information about the update:ón-2-0-0-kitkat-para-bq-aquaris-5-y-fnac-5/p1

          As for the LG, the situation is similar, it must have Bluetooth 4.0 and Android 4.3 or higher.

          1. Good evening Eduardo, thank you very much for your help, finally after a journey that would not have been possible without your help, updated the android version of the phone I have podido finally install mine link, lucky that I had the automatic backup and has podido save "almost" everything.
            I have thrown the blanket on my head and I have self-gifted the M400 but for that I pass to the other forum and we comment, a greeting and thanks again.

  5. Hello, good afternoon,

    I'd like to know if Mio Link is compatible with the Polar M400. I don't like chest bands very much. I can't find any information anywhere.
    Thank you very much in advance.

  6. I just bought the m400 polar and the Link and I was very disappointed, I thought that I could record the pulses in the polar and in the runtastic app of a Samsung s4 ... And there is no way. I think that because the polar and the Samsung have only the possibility of receiving them by bluetooch, right? And by bluetooth you can only link one at a time, right?

    1. Indeed, via Bluetooth you can only connect to one device at a time.

      But your Samsung has ANT+ connectivity, so you can connect your Mio Link via Bluetooth to your watch and ANT+ to your S4 without any problems.

      1. Yes, but the Runtastic app, which is the one I use only supports Bluetooth heart rates, there are others that support ANT+ heart rates, but Runtastic, no. A pity... 🙁

  7. Very good, and thank you very much.
    What do you know about mine? Especially the calculation of distance, the subject of pulses I understand like all mine.

    Thank you!

    1. Mio Fuse is basically Mio Link along with an activity monitor. In the optical sensor part it's exactly the same, nothing has changed.

      As for the activity monitor, all the data it offers comes from the internal accelerometer, it does not have GPS.

      Therefore, the distances offered will be estimates, more or less exact, but when it comes to controlling running distance it will not be the best option.

      1. Yes, do you synchronize it with the phone instead of using the accelerometer pull the gps of the phone?

      2. Another thing, it is submersible, if used for swimming do you know if the native application is capable of measuring strokes and turns in the pool?
        Thank you again.

        1. No, it is not possible for you to record any distance using external sensors, either a bluetooth GPS or directly on the phone. All information you give will be received through the accelerometer.

          It is submersible and will show you the pulses as you swim. At the moment it doesn't have any kind of pool metrics. Mio could implement this feature, as other manufacturers have done, but I don't think it will come as it is not advertised as such.

  8. Good afternoon, I am very interested in my link, but I would like to know if it will be compatible by ANT + with my rc3 gps polar, to which I am used to, except for the subject of the pectoral band that causes me constant rubbing...
    Thank you very much.

    1. Unfortunately it is not compatible with your RC3, as the system it uses for sensor connection is WIND, specific to Polar.

      The new models (M400 and V800) are compatible, as they have Bluetooth connectivity, but will not work with an RC3.

  9. I bought the MIO Alpha shortly after I went out. For those of us who need visual or tactile signals instead of sound, it's the best. But compared to the MIO link, it has less advantages, since it can't be synchronized with bluetooth, you can't set training ranges, and it has less variety of light signals. Also, the buttons are a bit peculiar (I don't know the name of the one that has several pressing options on 2 buttons), because sometimes it's not easy to get it off some screen. Thanks for the magazine, because the moment I can change the Alpha for a Link, I will. For the moment, I use the Alpha all the time and it's going great, but you've ended up giving me long teeth.

  10. I have been encouraged and I just bought it and received it! I need your help at the moment and before opening the box, with the size, since I ordered the small, S / M and I received the L. I have a very small wrist, if as you say the difference is in the size of the strap, I understand that podre put it on me because there are holes the only thing I will have left over strap, would it be uncomfortable to use it very large or would not be a problem? I would not like to mobilize the return / exchange if it will not mean an improvement.
    Thank you very much!

      1. Hi! I've measured my wrist and it's in the middle zone (at the end of the short one and the beginning of the long one). Having used it, which one do you think would fit me better? Thanks!

  11. Congratulations for the blog, I just discovered it coming from applesfera, I love these comparisons, as it should be, and not to talk about the functions above.

  12. Great report!!!! Very good yes sir!!!!
    You don't talk about autonomy... how long does the battery last?
    Between mine and the fitbit charge hr... without looking at price... which would you buy?

    Thank you!

    1. Thank you Ruben

      In the test that I did for forum athletics ( spent the 8 hours of autonomy reading the pulse and sending data via Bluetooth.

      Although the Mio Fuse (which would be the equivalent of the Fitbit, for the activity monitor) and Fitbit Charge HR seem very similar in concept, the typical user is very different.

      Mio Fuse is a pulse sensor with activity monitor, while Fitbit Charge HR is an activity monitor with a pulse sensor, which means that its main features are different, mainly because Mio Fuse can transmit pulse data to other devices and Fitbit Charge HR cannot.

      Which is better for you? If you want a stand-alone activity monitoring device, Fitbit. If you want to train using a GPS watch or other device (phone, bike computer, etc) and not have to rely on a chest strap, Mio Fuse (or Link if you don't want the activity monitor).

      1. You work hard....thank you my friend!!!! I will use your code to help you with your channel and poder help more people with your work!

  13. I have the M400 polar fleece and now I have ordered a mio link bracelet because I find it difficult to find sports bras that don't bother me with the chest band. I understand that with the M400 polar fleece and the band you can't detect pulses in the pool (unlike the V800 and the new M300) but I don't know if it's a question of the watch or the chest band (electronics is not my thing). Can I measure my pulses while swimming with the Mio link? Can I see them on the watch? Thank you.

    1. The limitation is due to the digital connection of the M400. Underwater, a digital signal (Bluetooth) cannot penetrate further than 8-10 cm. Therefore the M400 cannot receive the signal from the H7 sensor underwater.

      This is not the case with the V800 and A300, because in addition to the digital Bluetooth connection they also have 5kHz analogue connectivity, which has no problem with water penetration.

      So, Polar M400 + Polar H7 + water = incompatible. But if the M400 is paired with Mio Link, and the two go on the same wrist next to each other there are no connection problems, the signal reaches the watch perfectly and you can have heart rate data at all times.

  14. Hello,

    I'd like to know if my Link is compatible with Suunto Ambit 3. According to my Link's website, it's compatible with Ambit and Ambit 2, but it doesn't say anything about Ambit 3, and I find it strange that Ambit 3 being relatively new can't be linked.

    Thank you

    1. Yes, it's compatible. Maybe they don't indicate it specifically because the recovery time data is not correct if you use an optical pulse sensor, but for the basic function it's totally compatible (and I've used it that way).

  15. thank you very much for the report, one doubt, my idea of purchase is to use in swimming pool and to measure there pulsations, I use the garmin fenix 3... as we say it stores and it passes the data mine ? because in the swimming pool I do not have the mobile let's say near.
    many thanks

    1. The Fenix 3 does not record any heart rate data on pool activities, nor does it allow a HR field to be set on that profile, so even if it connects to Mio Link, there is no way for it to record the information.

      1. Ugh, and mine stores it, let's just say, and then goes to the appliance. Otherwise, it would be a big fucking deal.

        1. No, there is no memory to download. The Mio Alpha 2 can record a workout, but I have not tested it in this type of situation (and it is not ANT+ compatible).

          1. would you recommend me a bracelet of that kind that would work for my heart rate in a pool next to the fenix 3?

          2. It's not a question of bracelets, it's just that the Fenix 3 does not allow you to record pulse data during swimming activities.

          3. Thank you very much, my friend, but I understand that no one can measure it on their own and put it in their cell phone.

    2. For tracking purposes, Garmin has updated to version 4.00 by adding support for its new pulse sensors, and thanks to this update, Mio Link can now be used underwater.

        1. That's right, this has been added to Fenix 3, 920xt and Epix. This week I'll make an entry as aarative next to the Ambit3, I'm sure you'll be interested to have a look at it.

          1. Well Eduardo, I understand that my link fuse will be the same, right? since it depended on the update of the garmin.

          2. Mio fuse works the same way.

            Anyway today I managed to save an outdoor swimming activity with pulse data. I have to keep trying in the pool

          3. This is the comparison of this comment 12 days ago, I can't find it and maybe you have published it, if not I would be happy if you told me that publication is imminent. One of the failures I see in these 3 flagships, especially the epix that has 8 gb, is that they can not store music to send it to your bluetooch headphones as the Apple watch does. And I don't know very well that it costs in 500 euro watches to put 1 gb to put mp3 and listen to your music in bluetooch headphones and forget to bring your cell phone or any other gadget to listen to music, because there are many of us who listen to music while running for me is a big failure in 500 euro gps watches and I can't get into my head that it is so difficult to increase it

          4. No, it has not been done yet, as Garmin has not yet completed the update. In swimming pool, despite showing the pulse information, it is not recorded in the file. In open water swimming it is.

          5. Looking forward to seeing that 4-way comparison look badge. Phoenix 3, Epix, 920xt and Ambit3, you should get the V800 in for a full upgrade by August 2015.
            By the way, you haven't answered my question about why these high-end Gps watches (over 400 or 500 euros) that are almost exclusively for sports don't have 1 or 2 gb of memory so you can listen to music in your bluetooch headphones without having to carry your mobile on top or an mp3 player. And with the epix with 8 gb there's nowhere else to take it. This is no problem with the Apple Watch or Adidas. But why not the epix, or they haven't put it in the Phoenix 3 for example, I don't think it would increase the price much. And since they are exclusive for sports, many people run around listening to music and don't want to carry their mobile on top all the time. Best regards

        2. After further testing I have to say that unfortunately it records, but does not store. I have been reviewing the FIT files, thinking that Garmin still had to update Connect to display the information, but the data is not there.

          That is, it is possible to see on the clock screen the pulse data, but due to the operation of the new mode (when pausing or stopping the activity, the data has to be sent in batches to be added to the activity itself), they will not be saved in the final file.

  16. I've just read the Fitbit Charge HR and this one from Mio Link, and I'm a little confused. About the accuracy of the heart rate measurement from the wrist, the Fitbit Charge HR says that the accuracy is good for moderate use, but as soon as we train with rhythm changes, it's not as accurate as a chest strap and it delays the measurements. And the Mio Link says that it's perfect, it's just as accurate as the chest strap, so the Mio Link's sensor is more accurate than the FITbit Charge HR, even though the latter is more recent. I don't know, this data has left me a little bit dumbfounded,

      1. In short, the sensor of Mio link or Mio fuse (I guess it will be the same sensor) is much more accurate than the one of fitbit Charge Hr and Fitbit arises, no? or I have misunderstood?

          1. The Mio fuse lasts for 10 hours continuously, the Fitbil Charge HR lasts for 6 days and measures the heart rate quite decently in a continuous manner.

  17. Thank you very much for all the information. I had thought of buying a Garmin FR225, but I am considering buying a Mio Link sensor, so I can use it with my 310XT, having the multisport option. What has left me confused is the activity storage. When you finish the session, the HR of each instant of the session is not saved in the session file? And also, it can be used for swimming in the pool? Thanks in advance for everything. Cheers.

    1. Yes, all FC information is transmitted to the watch, just like the original ANT+ sensor.

      Technically it can be used in a pool, but the watch must support the option. In the case of the 310xt, the swim profile does not have the option to display (or record) heart rate data, even if the sensor is connected.

  18. Norberto is my name and since the measurement system of the Mio is similar to that of doctors as you explained, it measures the percentage of oxygen in the blood using the same method? Thank you.

  19. Congratulations on the website, it's a reference for me in the running world! By the way, I have the Suunto Ambit3 Sport and I wanted to buy the Smart Sensor chest strap, but I think the comfort of the Mio Link on my wrist gains a lot. Do I miss anything if I buy it before the Suunto chest strap? The little I understand both are the same but Mio Link has more features, right? Thanks in advance!

  20. Very nice review. I have seen that you sync the bracelet with a V800, do you think it will pod be able to connect this Mio LInk bracelet to a Polar Loop " bracelet.

  21. Yesterday I bought the Mio Link, I turned everything on perfectly until when I did the firmware update, it was checked and the intense blue light did not turn off anymore... I put it to charge, I pressed the off button to see if it would turn off, there is no way, I connected it to the computer, it does not do anything either. I was checked with the light on

      1. I had to return it to the store, because it was impossible. Did you do the firmware update? They gave me another one that works, but I didn't update it. I just configured it for use with the Garmin 920xt

  22. Hi Eduardo, you said in your article that the bracelet can be changed for another one, I got my link but in size s/m and I would like to change it. The problem is that I can't find any spare parts in any store. If you would be so kind to tell me where you saw it you would do me a big favor.
    And he placked for your website. Thanks in advance.

  23. First of all, I'd like to thank you for the tremendous work you've done, which has brought me out of many a doubt. I just placed the order with Amazon from your link. Greetings. Roman

  24. Good morning Eduardo, congratulations on your work, very big, this bracelet gives you data regarding sleep ??? Daily activity etc ???
    Or for that better fitbit ( they say that the pulses from 155-160 nothing at all )

    1. Thanks, Tito. If you like the work I do, don't forget to vote for the Journal Awards!.

      Mio Link is just a pulse sensor, it doesn't provide any other information. With activity monitor you have Mio Fuse, but before launching I would wait for the new proposals from both Polar and mainly Garmin, as the new Vivosmart HR does track daily activity, sleep and also allows sending pulse data to ANT+ devices. It remains to be seen how the new Elevate sensor from Garmin works, so keep an eye on the web for when the test is published.

      As for Fitibit Charge HR, in the test I found no major problems with the sensor, comparing with other devices the results were correct. You can see it here.

      1. ! BIG ! That's done

        Vivosmart Hr is on the market now ?
        I need a bracelet that meets the accuracy of Mio Link in the pulse and in turn record the daily activity ... I know what I ask a lot ... But there is on the market something like this ... What would you recommend what is currently on sale?
        Or would you expect ??

        Thousands of THANKS

        1. I would wait for the new proposals from both Garmin (Garmin Vivosmart HR) and Polar (Polar A360), at least to know how they behave in terms of their pulse sensor.

          If you want continuous pulse monitoring, today only Fitbit Charge HR and Garmin Vivosmart HR offer it. The Garmin wristband is not yet released, it will arrive in the next weeks. I am waiting for a test unit to start the test.

  25. Hi, Eduardo!
    First of all, thank you for your great work.
    The question I have is whether to buy the Mio Link with the Garmin 220 or to buy the Garmin 225 directly. What are the advantages and disadvantages of each option? Which option would you choose?
    Thank you very much!

    1. Hello, Miguel.

      Thank you very much for your appreciation.

      My recommendation is that you wait. First of all because the 235 is about to arrive in the shops (today I received a 230 to start testing). But first you have to evaluate the pulse sensor.

      And not only that, but with the arrival of Vivosmart HR and the possibility of sending the keystroke data to other devices via ANT+ it can be a more interesting option than Mio Link. Today I also received one of these to start testing.

      So it's best to wait a few weeks for me to do both tests (and the 235 when it's available) and then decide between the multiple options.

      1. Thank you very much for your answer! What do you mean when you say that with the Vivosmart Hr it is possible to send the keystroke data to other devices? Doesn't Mio Link do that?
        Anyway, I'll take your advice and wait for you to run the tests.
        Thank you again.

        1. Yes, so can Mio Link. But the Vivosmart HR is more than just an external sensor. It is also an activity bracelet and receives mobile phone notifications, for example, in addition to 24-hour pulse tracking. It is a more interesting product.

  26. Hello friends, I am very new, I am interested to know if this bracelet works well in both hands, or if you could place it in the opposite hand to the one I have my gps (m400 polar), I really think it looks a little grotesque the 2 devices in the same hand, I am very interested in this product, thanks!

      1. Excellent Eduardo, thank you for your kindness and prompt response, I am already ordering it on eBay!!! 🙂 🙂 .

  27. Congratulations on your work!
    Congratulate you for the work you do with each product, to make it easier for consumers, or just the opposite...

    I apologize because I'm not at all in this world, and I don't want to offend anyone's intelligence with my existential doubts of platitude.

    First of all I want to say that I want my first sports watch, but I don't want it to look like it, that's why I'm going for the activite pop, which I love, but I can't make up my mind because it has no pulse, one of the reasons why I wanted to buy the watch... The thing is that after the exhaustive analysis that I read on this website, taking a look at the rest of the analysis I saw this one, my link. And I have several doubts

    With the activité pop it is absurd to put mine on, because there is no possibility to see the pulses. That's as far as I go. But what if he bought me a cheap watch that is thrown by bad guys, would it synchronize and could I see the pulses there? What does the watch need to have, bluetooh or ant+ or necessarily be a watch that within its specifications is the pulse meter?

    I have read that my link could work autonomously, and it indicates you by lights, but it is not clear to me if in that case it also records the activity. I am thinking for example if you will buy mine and go to the gym with nothing else, neither mobile nor clock to synchronize with, if then when you get home you could see the graphs.

    I also read in a previous comment that someone had had a heart rate monitor that synchronized with the machines in the gym, but because they were so old. There's no chance that it would happen with mine too? Because that would be a tip-off for me to go for this option...

    Thank you very much in advance

    1. Thank you, Alejandra, for your comments.

      Activité Pop is an activity monitor, which means it simply measures steps and estimates calories, but has no ability to track heart rate.

      What Mio offers right now are optical sensors, and in some cases they also have different functions such as activity monitoring.
      You can take a look at the Mio Fuse and Mio Alpha 2. But if you want to combine it with any other watch, the Mio Link will be perfect for use as a sensor and avoid the chest sensor.

      Whether the sensor works with the gym machine is not dependent on the Mio, it depends on the gym machine and the type of connectivity it supports.

      1. Thank you!
        So I can use any watch? I have seen on Amazon a sigma 13.11 for less than 40 euros ideal for what I am looking for, but I have not been able to see anywhere if it supports bluetooh or ant+...

        The activite pop I'll wait for an offer, I'll keep an eye on your website 😉.
        By the way, speaking of offers, if you want to include it in the list right now it's in amazon canada my link so the change is about 57 ?.

        1. No, the Sigma doesn't work for you, it doesn't have Bluetooth or ANT+

          On Wed., Dec. 30, 2015 at 8:27 p.m., Alejandra () wrote:

  28. First of all, congratulations for the web, I think that many doubts are cleared up in general and that is to be thankful in these times with so much variety. The work that you have behind you must be incredible!
    My question, I have a V800 and as you explain I can synchronize it with the Mio. If I swim with it I understand that it will respect the metrics both indoors and outdoors, but, the pulses are real, have you done or are you thinking of doing a comparison with some watch?
    Thanks x all and keep it up.

    1. The optical sensor is still not totally reliable in the water. I have done tests, and sometimes the data has been correct (compared to another device), but many other times it has been totally wrong. I would say 50-50.

      1. Thank you, Eduardo.

        A pity it's still not well resolved... I suppose in time some totally reliable device will come out. You'll surely inform us about it...

        By the way, I have read information about the Ampstrip, which will be released in March in its beta version and in July in its final version.

        What do you think? If they don't lower the price, I think they're going to crash, to expect people to spend more than 150 euros every year for being monitored by a disposable patch, seems to me to be reckless. Although, I have to admit that I am very attracted to the idea that these people from Indiegogo are developing

        I reiterate my thanks.

        1. Ampstrip is not going to be a product for the general public. A few months ago they decided to reimburse all the users who supported them, and they are finally going to go to the medical sector.

  29. Hello Eduardo buy a mine link on Amazon and I got it today, maybe you or someone from the forum can help me, when I opened it I tried it and everything was fine, now at the time of setting in the app mine go iOS asked me to update the firmware and I gave him accept, failed the download connection and since then the MIO LINK was as locked with the blue LED on fixed, you can not turn off, or connect or anything, perhaps to fail the connection step something with the pulsometer. I ask if someone happened to someone this and know the solution.
    greetings javier

      1. Hello Eduardo, this bracelet can be worn alone, without a watch.
        What I need is to see the heart rate at the time
        Do you have any kind of warning system to know if you have reached the maximum number of pulses that I have programmed?
        Thank you.

  30. Good night,
    I would be grateful if you could advise me on the best purchase. I am looking for a watch with an integrated pulse meter. Focused a little on everything, but mainly on fitness, I value above all the reliability of the pulse meter and the fact that it has an activity monitor.
    I thought about my link + polar m400 or the tomtom spark cardio.
    If you think another option is better, I'm listening.
    Thank you very much, a greeting

  31. Hi, Eduardo:
    Thank you very much for such a hard and clear report. I really appreciate it. However, I wanted to ask you something. I use the Runtastic Pro application with my windows phone 8.1. I could use the Mio Link so that it sends the keystroke data to the phone... On the other hand, if I download the Mio Go application in my wife's iphone, I can regulate the areas there and forget about the application so that I can only see the light signals while I run and the runtastic application when I have finished running... Thank you very much in advance for all your dedication. Thank you very much indeed.

    1. Yes, you will be able to use it with Runtastic Pro. Windows 8.1 is compatible with Bluetooth Smart, and I guess your phone is too.

      Similarly, with iPhone you can leave zones set and use Mio Link independently.

      1. Thank you so much for your prompt response. It's great. I thank you from the bottom of my heart. Best regards

  32. Hello Eduardo. Very good presentation as all yours. But I want to ask you about a problem that has arisen with my polar M400. Before linking it to the polar I have linked it to the mobile and then. clear, I do not find the device to link plar (I guess because it was already connected to the mobile by blue. I have tried to close the application on the android phone and nothing. How can I then connect it to the polar m400 since there is no way to recognize the Miogo Link? I look forward to your response, thank you very much and congratulations again.
    P.S. I bought it on Amazon through your link.

      1. Hi again Eduardo, I finally solved the connection problem and I'm telling you so you can be aware of it too. After turning off and uninstalling the application on my phone and it didn't connect either, I thought I'd turn off the MioGo too. I did, I turned it back on, but this time I tried synchronizing first with the Polar, and it connected right away, even though it had the H7 sensor right next to it and the cadence sensor for the shoe, hehehe. Once I checked that it showed me the data, I downloaded the application to the phone again and it was red...
        Thanks again, Monster! You've earned a loyal following.
        Greetings and even another, I have other doubts in mind to tell you.

  33. Hello, first of all, congratulations on the article, it already has its time but is still the most extensive in relation to mine link, comment that I lost my hr7 in a training in open water and I would like to try with the bracelet because I see it less uncomfortable. I have read all the posts carefully but I still doubt if it communicates perfectly with the polar v800 and if the pulsations are constantly transmitted while training in the pool, mainly on the subject of training by heart rate zones.

    Thank you very much, I'm waiting to process the purchase by amazon.

    1. Wearing it close to the watch will transmit correctly, but I would recommend that you opt for the H7 sensor again in order to have accurate pulse data. In all the tests I've been doing after completing the analysis of the Mio Link, I don't see that the results are satisfactory. This is common to all optical sensors (I mean in terms of swimming).

  34. Hi, Eduardo:
    Thank you very much for your advice. I already have the Mio Link and it links phenomenally by bluetooth with runtastic in my windows phone. I wanted to ask you if I can link it via Ant+ with a wrist meter in order to see the number of pulses while I am running. According to your study I see that it is. It is possible to link it simultaneously by bluetooth with my phone (it does it perfectly) and with a simple pulse meter type Polar Ft1 or something like that... With which would be compatible to run with both (mobile and pulse meter)... A greeting and thank you very much for all your dedication.

    1. Yes, you can have it paired simultaneously with your phone and any ANT+ technology heart rate monitor (the Polar you indicate does not use ANT+).

      1. Thank you very much for the answer. Then it can't be connected to this heart rate monitor. I'll have to find one that's economical and allows that technology. Good thing you warned me, I was about to buy it. Greetings.

  35. Hi, Eduardo,
    I have a Forerunner 630 and I use it not only for running but also for swimming. I put it in my cap and the GPS calculates the exact distance. Is it possible that I can add the pulses using the Mio LInk or the Mio Fuse? Are there transmission problems in the water? I usually swim in open water.

    Thank you very much and congratulations on your comprehensive analysis.

    1. No, the digital signal underwater only "travels" a few centimeters.
      There's no way the clock's going to get the signal.

  36. hello ! i wanted to ask you which bracelet would you recommend, what i am interested in is to know my exact daily kcal consumption both in activity and at rest for poder adjust my diet to the sport basically is weightlifting with some days i do sprints and metabolic training and low intensity cardio, and i was between the fitbit charge hr or vivosmart hr, but i don't know if there is any other cheaper model that will serve me for the same.
    a greeting

    1. For weightlifting I would not recommend an optical pulse sensor, pulse records are not reliable due to the type of exercise and constant movement of the wrists. In your case you should opt for a chest sensor.

  37. Morning,
    Congratulations on the blog. I have two questions:
    1. Is it possible to replace the battery in the Mio Link or after 3/5 years should it be thrown away? Are there any substitutes on the market that allow the battery to be replaced?
    Coupling the Mio Link to a gps watch (e.g. suunto A3 Sport) in swimming mode (side by side on the same wrist), does it record the data like the suunto smart sensor? does it manage to transmit it to the watch under water? does the data suffer any alteration?
    Thank you very much.

    1. No, it is not possible to change the battery in the sensor, nor in Mio Link or similar optical sensors. On the day the battery no longer performs optimally, you will have to replace the sensor, but it should last well beyond those 5 years without any problems.

      I've swum with Mio Link and an Ambit3 the way you indicate, both in the pool and in open water. The reliability of the data is relative. There were days when I got good records, and others when they weren't so good. The last two training sessions with the sensor have been positive, but as I said, it won't always have an optimal result.

  38. Morning,
    Congratulations on the blog. I have two questions:
    1. Is it possible to replace the battery in the Mio Link or after 3/5 years should it be thrown away? Are there any substitutes on the market that allow the battery to be replaced?
    When the Mio Link is connected to a gps watch (for example the suunto A3 Sport) in swimming mode, does it record the data like the suunto smart sensor or does it transmit the data to the watch underwater? does the data suffer any alteration?
    Thank you very much.

  39. Oscar

    Is it safe to say that my link is compatible with Polar and Suunto that uses Blue tooth?
    I am surprised that on my page you give a very wide list of compatibilities and these do not appear.

    Thank you

    1. Perfectly compatible with any of them with Bluetooth connectivity (Ambit3, M400, V800, M450 and V650).

  40. Hi, Eduardo,

    I have a question...

    I'm thinking of buying a good activity tracker first and I'm hesitating between "mio fuse and garmin vivosmarth hr". I'm thinking about these two because after reading and rereading you, I see that both have the possibility of emitting the pulse to then connect it to a gps watch or cycling monitor.

    The doubt arises because mio fuse, has more possibility of connection, but I do not see anywhere that you measure the pulse 24 hours as a monitor of activity as if it seems to do the garmin. Can you clarify? Is that I think that garmin in the end you can only connect with another garmin, is that correct?

    And if it's not too much to ask, what do you think about this option, since I don't want to make a big expense at the beginning, and if I get hooked then I'll expand according to my needs.

    Thank you so much!!! and congratulations on the huge job you're doing.


    1. Mio Fuse doesn't measure resting heart rate. It has an activity monitor, but just for that, activity.

      Garmin Vivosmart only has connectivity via ANT+, not Bluetooth.

      1. So which one do you recommend? I'm open to any option... I mean, I don't know if polar or fitbit has any activity bracelet that measures the heart rate at rest and serves as a transmitter like a chest band to connect to other devices.

        Any suggestions?

        Thank you!

        1. If you want that besides serving as an activity monitor it can also serve as an optical pulse sensor for an external unit, at the moment only Garmin devices can do it. So the best option is Vivosmart HR.

  41. Hello good morning, I wanted to know if it's compatible with the Suunto Ambit3 Peak, to replace the chest band? Thank you very much and a greeting.

    1. Yes, it is fully compatible. The only thing you need to keep in mind is that some of the functions such as recovery time or performance are based on pulse variability (HRV), something that optical sensors are not able to record.

      But for heart rate data, both the Mio Link and Scosche RHYTHM+ are compatible with Ambit3.

      1. Hello
        I'd like to know if it could be connected to a garmin fenix 3 that supports a chest strap instead
        Congratulations on your great article

  42. Hi. First of all, thanks for the tests. They're very instructive and helpful.
    My question. A few weeks ago I bought the Mio LINK to use it with a Polar V800 After several tests, especially in the last long run, I have seen a couple of intervals of 3 or 4 km with 180 bpm (we go to 100%) when by sensations clearly pod should be 140 or 150 bpm, like the rest of the ride.
    The question is... could it be that mine was too loose or that it moved? The truth is that I was wearing a wristband to avoid it... Small jumps I accept, but so many minutes...
    Thank you very much.

    1. This is probably a one-time error due to the confusion of pulses with cadence, which can occasionally occur not only in Mio Link, but in general in all optical pulse sensors.

      You can see more details about this in the Scosche RHYTHM+.

      1. Thank you for responding!
        Well, I just read the Scosche analysis and review my session today at a constant pace. I have 2 5 min intervals plus a final 15 min interval in a 1h15 session, where the ppm coincide with the cadence as you said.
        How can this be improved?
        I have been modifying the adjustment of the strap but it was indifferent.
        I haven't updated the firmware since the purchase. I don't know if it will make a difference.

        1. Unfortunately, there are not many possibilities to be solved by the user, it has to be at the level of updating the algorithm, but it is not easy to solve.

  43. Good morning, my father has been given a my global alpha2 and I can not link it with the phone, I tried two phones that happen to be BQ (latest model X5 plus and U), if I do directly from the program tells me that I do not find device and if I do from the bluetooth phone tells me BOND REJECTED BY MY GLOBAL-ALPHA2, I'm stuck there and I do not know what to do.

    1. Both models have Bluetooth over 4.0, so they are compatible with Mio sensors. They must be paired up from the application.

  44. Hey, Eduardo, great analysis.
    One question, can you record the heart rate without having the application running on the screen of your mobile phone or on a Polar? I mean, I would like to know if after a physical exercise or even while sleeping, you can dump the heart rate information and later analyze it, so you can see the evolutions.
    Thank you very much.

    1. No, Mio Link has no memory. Neither does the Scosche. You should use a watch with an optical sensor to support it, or a Fitbit activity bracelet.

      1. Hi Eduardo, I need to know if Mio Link is compatible with any of these heart rate monitors: CS200, CS500 polar and Bryton 310, thank you.

        1. The Bryton supports ANT+, so it could be paired with this one. Neither of the other two Polar's support ANT+ or Bluetooth.

  45. Well to me I am only left in doubt if it is compatible with the competition, ie with "polar", to replace its h7 band. That while I understand that for its dual connectivity should, but it is not something that in my opinion is clear.Gracias.

    1. It has an accelerometer because it is necessary for the calculation of the pulses, but it does not provide information on steps or similar.

Leave a Reply

Your email address will not be published. Los campos obligatorios están marcados con *

Back to top button