Bracelet cardiofrequencemetre Mio Link - Modele arctique Taille S/M (blanc)
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- Taille poignet de 121 à 175mm
- Technologie de suivi en temps réel de la fréquence cardiaque de Mio, garantissant une précision digne des électrocardiogrammes, même à grande vitesse
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Détails sur le produit
Descriptions du produit
Comme Mio Alpha, Mio LINK utilise une technologie qui a été développée en collaboration avec Philips. Deux capteurs LED et une lentille électro-optique mesurent le flux sanguin dans les capillaires. Des algorithmes complexes déterminent ensuite la fréquence cardiaque en se basant sur le signal de pulsation - même lors d'un sprint !
- Couleur : blanc
- Dimensions produit, largeur : 121 mm
- Données techniques complémentaires : Longueur : 175 mm
- Type de montre (catégorisation) : Montre cardio sans ceinture pectorale
Commentaires en ligne
Meilleurs commentaires des clients
Essai durant plusieurs activités sans aucun souci , elle continue à prendre la fréquence cardiaque sans faillir ( pump, RPM; gym )
Juste dommage que l'application avec les androids ne fonctionne pas encore,pour l'instant elle ne donne que la fréquence cardiaque intantanée mais on peut télecharger d'autres app. compatibles.
Commentaires client les plus utiles sur Amazon.com (beta)
I was using the Garmin HRM2 chest strap for awhile, but found that on dry days I would get errant readings for the first 1-2 miles of my run until I started to sweat. The Garmin HRM3 was a bit better, but it's still not the most comfortable to wear a strap around your chest, and I still had issues with accuracy when I wasn't soaked in sweat. Chest strap monitors have been around for years, and they function by picking up the electrical impulse across your chest from your heart. The advantage is that once you are sweaty, they tend to be fairly accurate. The disadvantage is they can be uncomfortable on the chest (a wet strap that doesn't dry quickly) and can chafe.
My first optical HRM was my Basis B1 activity tracker. The problem with that one is that it is good at getting an occasional heart rate for monitoring activity, but it fails to pick it up during strenuous exercise. It also didn't work with my GPS watch or my iPhone. Other optical HRM's have similar limitations.
When I read on DCRainmaker's blog about the new Mio Link, I knew I just had to try it. The new Mio Link is just awesome and worked amazingly as I will describe. First, I measured my wrist as they recommend. My wrist just above my wrist bone is 6.25". The small/medium band fit with 5 holes to spare. The strap actually snaps down onto itself as well so there is nothing loose. I hardly notice it on my wrist. I turned it on (simple push button on the top) and the LED flashed cyan to let me know it was on. I took my Garmin Forerunner 410, told it scan for ANT+ devices, and it came up instantly with my resting heart rate. Wow. I was up and going in no time.
One of the best parts about the Mio Link is that they have removed the display and dropped the price below $100, but they kept a really cool piece of visual feedback. There is a 6 state LED color code for your heart rate from Cyan to Blue (50%-60% of Max Heart Rate) to Green (60%-70% ) to Yellow (70%-80%) to Magenta (80%-90%) to Red (90%+). These zones can be configured with your smart phone, but you don't need the smart phone to use them once configured. That means you can use the wrist strap by itself for heart rate training without any other device.
The phone app was simple enough to use. Low power Bluetooth devices aren't always paired under "Settings" on the iPhone - you need to use the Mio app. The Mio App found the wristband quickly and suggested heart rate settings based on my age. I tweaked them since I know my max heart rate runs a bit lower, and I know my zones from experience. The app permits this customization and then it programs the wrist band. One really cool feature - the Mio Link simultaneously broadcasts ANT+ and Bluetooth, so you can use both your phone and your ANT+ compatible workout device at the same time. I didn't use the Mio app for runs, but did find the strap worked fine with both Strava and Wahoo Fitness.
The real test was my marathon. I started the marathon and had a good read on my heart rate. I had the Garmin Forerunner 410 on my wrist and the Mio Link just a bit higher on the same arm. My heart rate was rock solid. Unfortunately, at Mile 1.3 my heart rate dove from 158BPM to 101 BPM. I tightened the band 1 notch and it came right back up and stayed all the way to the end of 26.2 miles. Thanks to the Mio, I avoided going too strong up hills and I knew when I could push it harder on the downhills.
The Mio Link comes with a magnetic charger that charges via USB. The cable is built into the charger. It's a little short and might be tough to use with a wall charger. Unlike the chest straps whose batteries last over a year, this one lasts 10 hours so it will need to be charged occasionally. Before a marathon, you definitely want to charge it fully.
Overall I give it a strong 4 stars. I might even say 5 stars. I only have 2 issues. First, the heart rate update seemed slightly more lagged compared to my chest strap, by about 10 seconds. I'd start up a hill but it would take a bit longer to register with my wrist monitor. Second, it would be nice to get some sort of feedback on remaining battery life, perhaps via the LED. But given the chafing, adjusting, and inaccuracies associated with a chest strap, I'd say the optical technology is now ready for prime time. Neither the chest strap nor the Mio Link are perfect, but I'd say that the Mio Link is good enough that this new marathoner is ditching his chest strap happily.
UPDATE 2 MONTHS LATER - 6/1/2014
Just to add to my review, I have now been using this wristband for 2 months and literally haven't gone back for my chest strap once. After my marathon I did some recovery weeks of 20-30 miles, and am now working myself back up to 40-50 miles to prepare for a fall 50k. Since that time, I have had to deal with a few blistering mid-Atlantic days of 90+ weather, days when the sweat combined with the long run would have made chest straps near unbearable. The MioLink just keeps working and I forget I am even wearing it. The Bluetooth and ANT+ functionality is surprisingly useful because on days when I don't want to bring my Garmin watch, it pairs to my phone. This has been one of the best pieces of running tech I have purchased and I am quite happy with it.
UPDATE - 7/11/2014
Although I am a runner, I decided to add cycling to the mix this summer. I have used my MioLink with both the Strava app on my phone (bluetooth smart) and my Garmin Edge 500 (ANT+). Since there is far less movement of the arms while on a bike compared to running, I was wondering if I would still get a good heart reading. I used it in conjunction with the Garmin Speed and Cadence sensors as well. Just like with running, it is pretty consistent. As another reviewer noted, you need to make the band tight. Not so tight you cut off circulation in your hand, but snug. It also helps to put it a bit higher than a wristwatch. I generally put the Forerunner in normal watch position and the MioLink in the next spot higher up my arm. If I'm not wearing the ForeRunner (like on my bike), I just make sure to keep the MioLink in the same spot.
UPDATE - 10/29/2014
I just ran my first ultramarathon. 32.5 miles of running over 4000 feet of elevation gain. I used my Fenix 2 for tracking and MioLink for heart rate. I was a middle-of-the-pack runner, so I was out there for just under 8 hours. Given I started the MioLink early and forgot to turn it off immediately, I'd say that the battery lasted comfortably for 8 hours, and likely the 10 hours of battery life is fairly accurate. It worked great for my race and is a nice tool for ultramarathons.
- after a few more months running with the Mio, there are a few more details that I can report with absolute certainty.
First - Moving the band up my arm (say 2" closer to my elbow than where I wear my watch) makes a big difference in accuracy. However, drop-outs still do occur with some regularity. There's no other way to explain consistent heart beat rates suddenly dropping by 20 BPM for a minute or two, and then jumping back up to where they are supposed to be.
Second - The yellow, low battery, warning light that is supposed to come on at the 30% (or less) charge level has proven somewhat unreliable. By my calculations (in review below), it should show when you turn the unit on and have roughly 2 and a half hours charge or less. So when I turn it on - and see no yellow light - I think I'm good to go for a two hour run. So it's disappointing when 3/4 into the run the unit runs out of power.
Third - At times the unit spontaneously turns off. I've got no idea why. This has happened several times, and each time upon turning it back on, its still has plenty of battery life. I don't run but three or four times a week. But over the last few months this has happened three or four times (if that gives any idea of the frequency of the occurance of this problem.)
Fourth - The little blinking light is just too infrequent to be of any real benefit. For me running with an iPhone and the Run Keeper app, which periodically announces my BPM reported from the Mio Link, is what makes it worth having. Without an app like Run Keeper (or something like it), I'd not even bother with the Mio Link. But with such an app to announce BPM, it is worthwhile. The Mio Go app may do this too. I wouldn't know, for I've never used it again once I got the Link set up.
Update May 9, 2014
- after having used this for a number of additional runs, my Mio Link has become more consistent in its heart rate measurement. The key to that has been both moving the strap almost an inch up my arm from my wrist, and tightening it so that is JUST crosses the line into being uncomfortable. Not so tight that you notice while running, but tight enough so that if you had it on all day - like a watch - you would definitely loosen it up one notch.
With those changes it has completely stopped its prior behavior of reporting slow heart rates, when in fact, it was just a poor connection. I cannot confirm the accuracy of its readings now. Though they LOOK right, and are consistent (as in consistent heart rate reported over time for consistent effort).
- original review below -
I LIKE the product. It's comfortable. It looks cool. Its app is well designed. But it's got quirks, some of them potentially significant.
- Very comfortable
- No chest strap
- Bluetooth connection seems solid (never drops, did not try Ant+)
- Works flawlessly with the RunKeeper app
- Single button, primarily an on/off function
- Single LED light: cyan, blue, green, yellow, magenta, red
- Has two color progression modes: Zone Alert (blue -> green -> red progression) and Training (cyan -> blue -> green -> yellow -> magenta -> red). Each mode can be tailored to represent user customizable heart rates, but the order of the colors progression cannot be changed.
- The Mio Go app is required to custom configure the rates to be represented by the various heart rate colors. But once configured, the app is no longer required.
- As of this writing, the full Mio Go app is only available on iPhone. The Android version only provides the ability to customize the color heart rate settings.
- Does not keep a heart rate history. For that to be retained, the Mio Link must be paired to an app while in use, so that the app can keep the history
- It's been rumored to be sized to fit RunID "Elite" tags. It does not.
- When first turned on, displays one of three colors (cyan, yellow, red) indicating charged, less than 30% charged, or requiring charging to function. If the claimed battery life of 8-10 hours is true, then the initial cyan colored LED indicates at least a 30% charge, or (at a minimum) just under two and a half hours use before charging.
- Custom USB charging connector. Fortunately Mio sells replacements if you lose it.
- Not one-size-fits-all. There are two sizes, and buying the right size will be a critical consideration for some people. Good sizing info is available on the vendor website.
- The iPhone Mio Go app has GPS, displays time, distance, current heart rate, pace and "time in zone" for activity. Also a map of current location had indoor pre-programmed activities that appear (I have not used these) to be for treadmill, stationary bike and stair steppers.
- Magenta to Red color progression - When in the 6-color Training mode, the second highest heart rate range is show by a magnenta light, and the fastest is red. In the quick double blink of that LED, while trying to keep an eye on obstacles on the road (running/cycling) it is hard for me to tell the difference between a quick, tiny magenta flash, vs. a red flash. I have minor color vision challenges (red/green), so this may not be an issue for others.
- Slow double blink - the LED double blinks in cycles that are every three seconds. So when you glance down to check your heart rate, it could be almost three seconds before you see a light. That's bad for a runner. I would assume it's a deal breaker for a cyclist.
- Cannot tell the difference between bad contact contact and a low heartrate. If the unit shifts, you'll see a marked drop (possibly for a while) of heart rate. But when you review heart rate history, it just looks like inaccuracy. No way to tell the difference, other than (in my case) I can know with certainty that I was not running at a particular pace with a heart rate that is practically a resting rate. I'm not that level of athlete.
- You cannot configure color settings without the iPhone or Android app. Not a problem for me, but could be a deal breaker for some.
- The Mio Go app is a work in progress. It has locked up on me twice. And worse - switching between two color modes forgets settings for the prior mode. So if you decide you want the simple Blue/Green/Red progression of the Zone Alert mode for a little while, when you switch back to the more detailed 6-color Training mode, you'll find that all of your custom heart rates have been lost, and require reconfiguring.
- Build quality - it's not a deal breaker, but the LED shines through a translucent spot on the band. But my band is shifted so most of the LED light shines through, but not all of it. Still quite functional - I can see the color. But it is annoying.
WHY DID I CHOSE THIS RATING?
1) Questions over heart rate detection accuracy. Finding a better fit (tighter? higher up the wrist?) may resolve it.
2) LED blink frequency. The double blink - every 3 seconds - requires looking away from road too long when running/cycling.
3) Magenta/Red color progression problem. The similarity of the quick flash of those colors maybe not a problem for many. But it makes the 6-color training mode worthless for me.
4) The Mio Go app needs work.
WOULD I RECOMMEND IT?
Not sure - maybe worth waiting for version 2
After receiving the LINK I paired it to my phone through BT and also to several of my ANT+ devices -- FR 610, Edge 800, vivofit, for example. Recording of data with any of these devices was really no problem.
Why such a bad rating then?!
Very often my numbers don't make sense. With enough HR recording over the years I have a decent feel for where my HR should be. I may not know it to within a beat, but certainly I am usually within 30... unfortunately the MIO often is not.
I eventually recorded an old HR chest strap simultaneously with the MIO for several exercises. I did a treadmill run, outdoor long run, indoor spinning session and several outdoor rides. Nearly every time I had periods of completely wrong data -- 20-30 BPM off for minutes at a time. This, to me, is just unacceptable.
I've even tried different arms, different locations on my wrist and tightness variation. Some places do seem to work better than others, but I haven't found one that works reliably enough, and always playing with the location is annoying.
Also, if the device is too far (read... > 4 ft?) away from the recording device I see occasional signal drops -- HR to "---" or 0. I can't say the distance precisely, but if I don't use the same arm, then I see between 4-5 drops in an hour.
There have been rumors that MIO may be working on a software update, perhaps that has a shot at fixing some of the issues, if they do not... mine is going back.
From reading reviews from others it seems that the device can work for some people, yet I cannot give it a recommended rating for what I have experienced in my use.
If you're looking for a device that will broadcast ANT+ and Bluetooth simultaneously in a wrist-based heart rate monitor, this is probably your best option as of late 2014 or early 2015. It boasts good accuracy, reasonable battery life, wide compatibility with BTLE-capable smartphones and ANT+ devices, and is comfortable enough for all-day wear, turning on and off as you engage in activities you want to monitor over the course of the day. Charger frustrations and unreliability during initial configuration of heart rate zones are the chief problems with the device.
1. Precise. The monitor is very precise for activities taking longer than a few seconds. It registers heart rate within around 2BPM of my chest strap for all endurance-oriented activities and activities with intervals longer than fifteen to thirty seconds, and tracks heart rate very well when worn correctly.
2. Comfort. I can wear the Mio Link all day and simply power it on when I'm ready to engage in an activity. Unlike my chest strap, leaving it on for extended periods doesn't result in a rash or significant discomfort; it's simply a "second watch". This means I'm more likely to train with heart rate over my lunch break at work; strap on my activity tracker or GPS watch, strap on my Mio Link just above it, and when I'm ready for my run I just press their buttons and go.
3. BTLE range. I can have my phone in any pocket or in an arm holster and the heart rate seems to come through clearly, indoors or out.
4. Bluetooth interference. The Mio Link does not seem to interfere with my other Bluetooth devices, including smart watches and Bluetooth headsets.
5. Battery life. Nine or ten hours of battery life typically covers several of my training sessions in a given week without recharding.
6. Water resistance. From pools to showers to open-water swims in my local reservoir to days on end of body-boarding and snorkeling in the ocean off the coast of Maui recently (as long as I give it a thorough rinse-off afterward), the Mio Link has proven impenetrable to water in all my activities as long as I don't press the button underwater. And the blinking LED gives me a reasonable idea of what my current heart rate range is even underwater as long as I keep the band snug and high up on my wrist.
7. Easy adjustment. If you wear the Link low on your wrist near your hand, you'll often be disappointed in its accuracy. If you wear it higher up the wrist on your forearm toward your elbow, you'll find the accuracy is greatly improved.
8. Bluetooth and ANT+ simultaneous heart rate broadcast. This feature ultimately is the chief reason I bought this over competing products. You can use your smartphone (if it supports BTLE) simultaneously with an ANT+ receiver such as any compatible Garmin product. If you -- like me -- might find yourself some days with a Link but only your smartphone, you can still get your workout in & log it using your favorite HRM-enabled fitness app without having a dedicated ANT+ receiver of some sort on your person.
9. Fast startup. Strapping on the Link takes about five seconds. Once I press the button, it's usually broadcasting heart rate within about fifteen seconds, which is about the same amount of time it takes me to put gel on the electrodes of my chest straps and get them situated correctly.
10. Compatibility. The Link works well with a very broad array of devices; it's worked the very first time, every time with every ANT+ device I've thrown at it, and a few random BTLE-enabled smartphones of friends & co-workers.
11. Ease of use. By itself, the Mio Link is usable to train by heart rate zone and very easy to configure for your personal heart rate zones using the app. It really shines when paired with a device that allows more in-depth logging and analysis, but in a pinch you can have a great workout training by heart rate alone without additional gizmos.
12. The flashing light is bright enough to be viewed in bright sunlight. Which is also a con...
1. Accuracy. Accuracy and Precision are two separate things. While the Mio Link gives you very precise readings and is reasonably accurate, you won't get the same accuracy out of it that you'd get from a chest strap. It will give you a very good and reliable average reading while engaging in endurance activities (it's accurate within a beat or two of my chest strap) but won't register short two to three second spikes in heart rate as a result of brief, intense bouts of activity very well. The kinds of activities it struggles with a bit compare to a chest strap are things like Olympic lifting, brief sprints uphill on a bicycle, and that kind of thing. It'll register the overall rise in heart rate well, but not the very quick rise at the start that often accompanies these kind of brief, intense efforts. Therefore, I'd say it's precise, but for very brief bouts of intense activity it's not terribly accurate.
2. ANT+ range. The ANT+ range of the Mio Link is kind of low. Typical ANT+ devices have a range of about nine feet or three meters; the Mio Link's ANT+ range seems to be right around three feet or one meter. If you wear the heart rate monitor on the opposite wrist from your heart rate watch, you might get dropouts; if you use it with something like TrainerRoad, you'll want to ensure your ANT+ receiver is within about three feet of whichever forearm you use the Mio Link on or you may get dropouts when stretching, sitting up with hands off the handlebars of your bike, etc.
3. Battery life. Yep, the "pro" is also a "con". If the battery life were twice as long, I'd not rate this as a "con" at all. But at present, if you're doing an Ironman triathlon (140.6 miles) and expect to complete the event between ten to seventeen hours, or if you intend to compete in various 24-hour running or biking races or the like, the Mio Link is not the right choice for the event with only nine or ten hours of battery life. However, for any event up to and including a marathon, the Mio Link will handle the distance just fine.
4. ANT+/Bluetooth range underwater. Not really a problem with the watch, but if you're hoping to measure your heart rate underwater, it's really spotty at best even with the Mio Link on the same wrist as the heart rate monitor.
5. Low accuracy when worn low on the wrist. If you wear it low toward your hands rather than higher toward your elbow, the readings are often inconsistent.
6. The charger. If kept in the band, the Link constantly slips off the charger no matter how delicately I try to prop it up. I must remove the Link from its band for reliable charging. Probably my top annoyance with my Link, really. And often when charging the Link will go from "glowing blue, charging just fine" to "flashing red, not charging" for no apparent reason until I take it off the charger & re-seat it.
7. Band wear. Due to having to pop the Link out of its band every time I want to charge it reliably over the past several months, the rubber areas around the Link electronics are showing some wear: the rubber is a little stretched. I anticipate having to purchase a new band eventually.
8. Price. If you only want Bluetooth, there are cheaper options out there. If you only want ANT+, there are cheaper options out there. If you are willing to use a chest strap, there are MUCH cheaper options out there.
9. "Mio Go" login. The requirement of an Internet connection to configure the Mio Link from my smartphone is almost reason alone to deduct a star. When I've tried to loan my Mio Link to friends, the whole registration thing flakes out about half the time, resulting in an initially frustrating experience for them. Reconfiguring heart rate zones is not something I need to do very often, so I won't deduct a star for this poorly-implemented feature, but if there were one thing I'd recommend the Mio team fix, it's to allow you to configure your Mio Link without requiring an active Internet connection!
10. No HRV support. If you know what Heart Rate Variability is, you'll know why you would want it. In fairness, all optical monitors currently lack this feature; use a chest strap instead.
11. Strap dust. Minor nitpick. The strap seems to "collect" skin flakes & dust. It's easy to rinse off, but compared to the straps used by my Garmin equipment, it just seems to get much dirtier much quicker.
12. If you don't have a BTLE-compatible smartphone or tablet, you're not going to be able to configure your Mio Link's heart rate display. The rest of the functionality will work fine, but the flashing LED will register for a generic default heart rate profile. Not ideal, but usable.
13. The flashing light is kind of obnoxiously bright during long runs at night. Not something I do all the time in warm weather when the Link won't be covered up by clothing, but very common during cooler weather when I'm running in the pre-dawn or post-sunset hours.
I hope this review helped you with your purchasing decision. The Mio Link is my go-to heart rate monitor for all my day-to-day heart rate monitoring needs, but when I want to measure HRV or plan to go on an epic-length bike ride or run, I'll go back to the chest strap.
I have upgraded my rating after nearly one year of ownership and over 90 error free heart rate reports. The reasons for my upgrade are:
- Improve firmware, now reporting zones every 3 seconds vs. 8 seconds before. Now I can use it on trail runs and on my bike (it was reduction matter in my initial rating
- MIO app now shows remaining batter (though the rest of the app is useless and I connect to two other fitness tracking apps)
- Longterm reliability and battery life
*** ORIGINAL REVIEW ***
The Mio Link replaces a chest strap which is less accurate, uncomfortable and unable to provide any feedback during exercise without being tethered to another device. The Mio Link provides a range-based (heart rate zones) feedback, and when tethered via Bluetooth or ANT+ smartphone/watch/gyp equipment, it captures complete and detailed data displayed in realtime. Smartphones must rely on the Mio Go app or any other third party app that connects via Bluetooth or ANT+. I have tested it with several apps.
If you break it down, the Mio Link does two things, and one of them very well:
1) Data transmission. Your heart rate data is transmitted to a bluetooth device, such as an Android or Apple iOS phone, where it can be captured. The transmission is frequent and very precise.
2) Feedback. The blinking LED light provides feedback back on your heart rate, based on the (fairly standard) hear rate zones.
There is a separate App (Mio Go) that allows you to customize your zones, and monitor and track your exercise activities. In this review, I have ignored the app, and recommend you look at iTunes for App ratings.
- The band is light weight and comfortable.
- Easy to setup (I have paired it with RunMeter -favorite-, MapMyRun and RunKeeper apps) and connect.
- You don't have to wear a chest strap.
- Able to connect with Bluetooth and ANT+, so you can connect to many gym equipment as well.
- Accurate heart rate reading. I compared it to my Polar monitor, and they varied +/-2 bpm from one another.
- The device fails its second purpose, feedback, in many situations. For instance, it is great for cycling, or on an elliptical machine, however, when running, with your hand in motion, it is easy to miss the blinking LED as it blinks infrequently (seems like 7-8 seconds while you are running). It is a complete fail for trail running as you have to constantly watch your step and cannot look at your wrist for many seconds until you see the blink; in fact for trail running, wanting to get feedback is dangerous. The blinking should be ever 2-3 seconds at most. I have written to the company and have asked for this improvement to be delivered via Firmware (connecting with the app should be able to do deliver the firmware easily).
- Size. It should be one size fits all, or the option to buy different bands should be available as the monitor component can easily be pulled out of the band piece.
I would be happy to upgrade to 5 stars (''''') if they improve the feedback via Firmware. Until then, I cannot use it running, especially for trail running.
If I lower the rating to three stars or lower, it is because I have encountered an issue with the device.
Suggested Firmware Improvements:
- LED light display frequency
- Display of battery status/level on the Mio Go App (other Bluetooth devices are able to do so)
- It takes about 15-30 second to start reading your heart rate.
- Several reviews indicate inability to get consistent readings. I have not had this issue. In fact, I have tried wearing it with its top on the inside of my wrist, the opposite of how a watch is worn, and it still worked. I have even worn it on my ankle and got an accurate reading.
- After a full charge, I allowed it to be connected to my app via bluetooth for just over 5 hours. Testing the battery at that point did not produce the amber/30% level, suggesting more than 30% battery life remained after 5 hours with connectivity. Therefore, I do not doubt the 8-10 hour charge claim.
- I followed the instructions and have worn the band slightly above a watch position and never encountered problems with readings. I have ran a 1/2 marathon distance with it twice, wore it slightly snug, but it never bothered me nor did sweating affect the data reads. I wear it quite tight, which feels a bit restricted at first, but within a minute or two the elastic band seems to adjust and there is no discomfort for the duration of exercise (up to 2.5 hours for me, excluding the 5 hour battery
*** 1 AUG 2014 Update ***
- Still maintaining the four star rating. It has had over 50 uses without fail.
- I was able to replicate the problem some others are experiencing with connectivity. The Bluetooth reception range is low, perhaps to preserve battery, and if you keep your phone/device in a belt strap where the device is firmly against your back, Bluetooth is not strong enough to go through or around your body. You have to reposition the belt so that it is closer towards the writs wearing the Link.
The connectivity issue mentioned does not affect me, and I am maintaining the four stars.
I used the Bluetooth diagnostic app LightBlue to test reception strength with the receiving device/phone in different locations and distances.