Awesome fitness band. This is not in the likes of fitbit but more for serious athletes. Can be used with Garmin or Polar devices as well..works both on Bluetooth and ANT+ devices...Can be used for Swiming as well..Very accurate optical heart rate monitor...1 star less for the sizing and pricing issues in India

I love this tracker, the steps are accurate on it and so is the heart rate (at rest) when I compared it to a pulse oximeter. I even compared it to one of my co-workers fitbit, and the steps on this watch were way more accurate (the fitbit counted steps when she was driving), and the heart rate at rest was also more accurate. The only thing that wasn't to accurate was the calories burnt (but I don't think any device is with the calorie count). I have yet to try it out when I go jogging. Also it is hard to read during the day when it is bright outside. Other than that I would recommend this tracker, it was worth every penny!

This product seemed like the perfect device for me. I looked at youtube reviews and they all said that the device had a pretty good heart rate monitor but not that great of app and lacked fancy functions. This seemed fine to me. I wanted something that tracked my calories and told me how hard I was working in the gym. For the most part the heart rate monitor seemed pretty accurate in most cases. I would workout and it would it was consistent with the monitors the gym lets you use. When I was lifting it showed that my heart rate stayed up there which is what I wanted to see. A really great feature, one of the reasons I wanted this watch, was the color coded heart rate zones and the vibration that alerts you when you change zones. All of this seemed to work well with my gym workouts.The heart rate function was poor when doing martial arts. It was very inaccurate. It would say my heart rate was high when I was doing nothing and low when I was doing activities. I mostly bought it for the gym so this wasn't all that important.What got this watched returned and a one star review was the app and little irritating things. As others have mentioned the buttons on the device are hard to activate sometimes. Other times they are easy to use. They only want to work when they want to work. The biggest most frustrating thing ever is that app. I knew the app wasn't that great, but this is ridiculous. It doesn't sync your workouts and only sometimes syncs your daily activities. I got it to sync once, and the detail of the heart rate graph was just terrible. The daily activities only show the basic overall steps and calories and what not for your day, there is no way to compare. And that is when it syncs, most of the time it will partially sync your daily workout, sometimes not at all. Sometime the app doesn't even recognize that your watch is right next to your phone, even if you do everything right.But really this watch is good and the app is so bad it offsets the good. Maybe if they ever fix the issues with the app I might get it again, but it is to frustrating to have right now. I don't recommend purchasing it, because without a decent way to interpret the data, its pretty much useless.

En ocasiones, si realizas danza, el enganche final de la correa se puede soltar y es algo molesto, pero por lo demás, todo es tal y como se indica, a demás de que la batería dura 6 o 7 horas si estás en programa deporte (alguna hora más de las que indican)

J'ai pris ce bracelet pour afficher mes pulsations cardiaques dans l'application Runtastic (compatible ANT+) sur mon téléphone Sony Xperia Pro lors de mes activités sportives (je ne peux pas mettre de ceinture thoracique).Bien qu'il fonctionne en bluetooth 4.0, c'est un des seuls bracelets qui fonctionne également avec la technologie ANT+ compatible avec certains téléphones Android Les autres bracelets fonctionnent souvent uniquement en bluetooth 4.0 pour Android >4.3 ou iPhone récents.Attention, pour que Mio Fuse fonctionne en autonome, il faut le charger une fois et le configurer la première fois à l'aide d'un téléphone bluetooth 4.0 grâce à l'application Mio Go (zones de fréquence, heure, mode droitier/gaucher, ...). Ca a l'air d'être obligatoire. J'ai fait cette configuration Mio Go à partir d'un téléphone Android 4.4 ne m'appartenant pas car mon Sony Xperia Pro est Android 4.0 et bluetooth 2.1...J'ai ensuite téléchargé les plugins ANT+ sur Google Play et activé ANT+ sur mon Sony Xperia Pro.Lors des activités sportives, j'appuie au milieu de la montre (il faut que le bras soit à l'horizontale pour que l'écran tactile de la montre soit actif) pendant 2 secondes. FIND est affiché et mon pouls est trouvé en quelques secondes. Je lance ensuite Runtastic sur le téléphone et je connecte la montre dans les paramètres.Ensuite, c'est parti (appuyer à gauche ou à droite de l'écran du bracelet, bras à l'horizontale, pour changer l'affichage, Distance, Durée, Calories...). Ca vibre lorsqu'on change de palier de fréquences (défini dans Mio Go) et l'affichage du rythme s'affiche (l'affichage est éteint mais peut être activé en continue... attention à la batterie).En parallèle, il est aussi possible de lancer une activité sur le bracelet une fois le cardio activé en appuyant une seconde fois sur le milieu du bracelet (sans maintenir appuyé). Pour arrêter, il faut appuyer quelques secondes au milieu et l'activité s'arrête (un appui court correspond à Pause). Ce mode de fonctionne est aussi disponible pour le mode autonome.Le bracelet peut aussi fonctionner en 24/24 sans le cardio activé (pour économiser la batterie) en mode Step autonome (visiblement, les pas sont comptés par rapport au balancier du bras et non par rapport aux vibrations lors des pas).Les activités en autonome avec ou sans cardio activé peuvent être synchronisés tous les x jours sur un téléphone bluetooth 4.0 dans Mio Go.C'est un bon bracelet. Il est étanche (natation). Il peut évoluer apparemment (Firmware). Tout comme l'application Mio Go qui en est qu'à ses débuts (synchronisation en mode ANT+ et compatibilité Android Il n'y a pas de mode d'analyse du sommeil comme sur certains bracelets autonomes et le mode Step autonome pourrait peut-être être amélioré. A suivre sur la durée...

To start off, I will clarify what sort of activity I do. I run an average of about 30 miles/week, swim 5k/week and cycle for cross training. My main device I use for tracking most of those activity is my trusty Forerunner 910xt.Pro :1. Accurate HR data. Mio creates one of the best optic HR on the market right now. They kick start everything 21 months ago with mio link that is capable of capturing HR data especially during rigorous activity, ie running.2. ANT+ and Bluetooth boardcasting. This allows you to use with existing garmin running watches or strava on your mobile phone.3. Battery life. It claims to have about 7 days of battery life (with 1 hour of HR a day). As a fitness tracker, the less you charge it the better. That's why garmin's vivofit is quite popular since you don't need to charge it at all (uses watch battery). So I say Mio did a good job in that department.4. Clear display. The display is clear and visible regardless of the time of day.5. Comfortable strap. Strap is quite comfortable. I now use it as my everyday watch replacing my long used casio.6. Extremely versatile in terms of apps you can use (ie strava)7. 3 ATM waterproof (translate to it being waterproof enough to survive 30m underwater) and yes, that means capturing HR when swimming.Con1. Battery life. Battery life for HR is only limited to 7-8 hours continuous monitoring during activity (20 hour if display is turned off, mio claims). It is understandable that they kept it lighter.2. No sleep monitoring. Mio Fuse is one of the most basic fitness tracker on the market in terms of functionality when compared to other fitness tracker such as jawbone or fitbit.3. Lack of 'fitness analysis'. One of the things people look forward to especially if you aren't as serious is your progress. There is no point in obtaining all these data if you don't understand it. Jawbone up 3 will monitor your HR in the background and tell how you have progress throughout the week.4. Inaccurate speed/pace when running/cycling/swimming. This is expected and there isn't much that can be done to improve this aspect but I thought its worth mentioning.5. One colour, one size. I really like the red/black combo but unfortunately, my wrist isn't as big so I had to op for the smaller indigo.Heart rate monitorI link my mio fuse to my 910xt and use it for runs. It does take a while to get adjusted correctly and ensure accurate results. So far, most of the data correlated quite well with what my HR would be. I do notice initially there are spikes/inaccuracy in the first minute or two but then it springs back to normal HR zones. So far, I am impressed and enjoy using it. For the longest amount of time, I have used a chest strap to get heart rate data. It feels great not needing one. I do notice that sometimes when I do my intervals, mio fuse doesn't maintain my high heart rate even though I know i'm near my max. It does register at 194bpm but not for long. I however think this is mainly due to my skin being exposed to the cold (optic heart rate measures blood flow under your skin so logic stands that the cold might affect some results) however, I have only done one session with it so it is a little hard to judge everything based on one.I have used it for my swim. I am impressed that this little gadget is capable of capturing HR data while swimming. As you know, there is a long debate on how one would capture HR data underwater. Most chest straps ( even if they are waterproof) are unable to capture heart rate due to the limitation of the hardware (ANT+ wavelength doesn't travel far. You have to put your watch right next to your strap just to get HR data) with the exception of suunto's chest strap (uses a different technology than ANT+). Be warn that sometimes, the data field shifts about when you swim due to the water.One of the biggest advantage of this is it allows for accurate calorie burn (for those who uses that function) and HR data when cross training (or any activity really) without the annoying chest strap.ConclusionOverall, this isn't one of the best fitness tracker out in the market. You are however getting one of the best optic HRM in the market as of yet. It is capable of giving you an accurate picture of steps, calorie burn and HR data. With the plus of broadcasting ANT+ and Bluetooth, it makes a great complement to existing GPS watches or mobile phone users. As of date, there is no other fitness tracker that is capable of this.If you are someone who train by heart rate zones and would like an accurate data of HR throughout your activity, this is the fitness device for you. If you are someone who are casual gym goers who doesn't do that, there are better suited devices out there (cheaper too!). If you are only interested in getting optic heart rate without the fitness monitor, look up Mio link. It is essentially the same unit except no display and doesn't record HR but broadcast in ANT+ and bluetooth.Update 9th February 2016:It took a while but i finally gotten Mio Fuse 1.20 update which includes sleep update. I can say it works out well and it does measure your resting heart rate and 'sleep efficiency'. The only annoying bit of sleep tracking is the need to manually activate it. There are some night where i do forget to do it. I have added screenshots of what the data will look like.I'm quite happy with the device but the sleep update just made it so much better. The software update does include calories burn with steps. I never really notice it before but now my daily 5k walk to and from university add another hundred calories.

pros-very accurategreat battery lifeworks well in conjunction with any sports tracker appeasy to see with always on display (in workout mode only)cons-inaccurate calorie burnproprietary charger that is annoying to usesomewhere in-between-somewhat uncomfortable for a sports watch but more comfortable than chest strap.Accuracy:I'll start off with the accuracy, since that is the main function I use and cared about before purchasing the Mio Fuse. In that regard, I am completely satisfied. I wore a chest strap along side the Fuse for about a week (5 hours of use) just to compare readings. The Fuse performed great and even outperformed the strap on several occasions. The Fuse's update interval is about twice as fast as my chest strap.Battery life:I set the display to always-on mode during workouts and can still go a full week and usually more before needing a recharge. This is probably the device I have to re-charge the least out of every electronic I own. Thankfully too because the charging dock is a pain to use. It requires you to dock the back of the device onto a very weak magnet, but because the mio always has a bend to it, you have to either elevate the dock, or place it on the corner of a table for the watch to dock with it. The dock is also proprietary so while it uses a USB connector on one end, the part that connects to the watch cannot be replaced. I would have much preferred a basic USB mini or micro slot into the watch itself.Compatibility:I've tested it with Strava, Endomondo, Runtastic, and Sports Tracker and it works with each of them perfectly. While those are the only ones I bothered testing it with, it should work with any app that supports bluetooth heart rate monitors.Calories tracker:I specifically mentioned app compatibility because using an app is a MUST if you want to track anything beyond heart rate. The built in calorie tracker is extremely inaccurate. The pedometer works well but becomes irrelevant on non-step sports such as cycling. So to get the best out of your data, you should pair with a sports tracking app for the gps functionality and use your Fuse to track your heart rate.Zones:Big kudos to Mio on this. I find the zones notification to be extremely useful. You can set it to a simple 3-zone or a more in-depth 5-zone setting and whenever you enter or leave one zone the Fuse will vibrate and a small LED will change colors accordingly. This LED will blink in both always-on mode and when the display is off, so if you want to save some battery you can set the display to turn off and simply go by the vibration and/or blinking LED. All of these settings, including specific heart rates for each zone are configurable and can even be disabled in the configuration app.Comfort:Compared to a chest strap, the Fuse is heaven. Depending on the size and shape of your wrists, you may have to wear it up to 3 inches higher on your arm. My wrists are as small as they get and even somewhat concave in shape I also have somewhat hairy arms so I'm an almost worst-case fit scenario yet I still have very little problem finding and maintaining a solid reading. Like me, you might be able to find a sweet-spot in the notches where it fits comfortably loose near your wrist for daily use and is nice and snug when you push it higher up when you're ready for a workout. Even then, it isn't the most comfortable watch in the world and like others mentioned, it can leave small bumps (I mean bumps or imprints you'd expect from a tight watch or even socks, not anything permanent or severe) after wearing it tight for a while. If you're a regular watch-wearer like myself, it probably won't bother you as much as someone who rarely or never wears a watch. For a comparison, I'd say it's more comfortable than a metal band, but less comfortable than a good quality rubber sports band.Conclusion:I have to give this product a 5 star rating because for what it is and for what I bought it for: A heart rate monitor minus the chest strap, it exceeded my expectations. Period. No, it's other features aren't perfect, but that can easily be made up for with the right app. No, it isn't as comfortable as a baby bunny snuggling your wrist might be, but it isn't "uncomfortable" either, it's somewhere in-between and is a massive improvement over the old chest strap. So yes there is definite room for improvement, but as it is now, it is above the level I ever expected this technology to have ever reached.R.I.P. chest straps. You were uncomfortable as all hells combined but you served us well, now rest. Rest and be forgotten.