Fitness Trackes, M2S Waterproof Smart Bracelet Heart Rate Monitor Smart Band Pedometer Stop Watch Calorie Counter Sleep Tracker Blood Pressure Monitor w/ App for iOS and Android Cellphone-Blue

Here are the "good" and "bad" on this fitness tracker...ADVANTAGES.1. The bracelet is very light, stylist, and contemporary..2. The $33 price is outstanding in comparison to Fitbits, that cost over $100..3. Recharging the unit is easy. Pull off the top end of the blue strap from the watch unit. Insert the latter into a USB port..4. The bracelet has ample information. On the time function, it shows the time, date, temperature, and day. On the exercise function, the number of steps, miles, and calories exerted are showed. On the cardiovascular function, the device shows the number of heart beats, percentage of oxygen in the blood, and blood pressure...DISADVANTAGES.1. Blue is the only color choice..2. Setting the device is a pain. It is not easy. Secondly, the measurements use the metric system. Although the user sets it for pounds, inches, and feet, it continues to use the metric measurements. Third, the biggest problem is that the settings keep going back to default. On the first day, I reprogrammed it five times. I gave up afterwards. Although I am age 68, the device has me at 27..3. The information is NOT READABLE outside. The ambivalent light wipes out the LED numbers. Even on a cloudy day in Seattle, I can barely see the faint and partial numerical/alphabetical outlines..4. Its competitors have 14 activity measurements: walking, running, cycling, exercise, resting, swimming, and others. This device is limited to only one - walking..5. The information insert that accompanies the package is not adequate. A detailed user manual is needed..6. I compared the fitness tracker to a professional blood monitoring device. According to the latter, my blood pressure reading was 149/93 with 76 heart beats per minute. The fitness tracker read 131/83 with 74 heart beats per minute..The heart beat measurement was very close..The big problem was the blood pressure reading. The inaccuracy was 11-12% on the low side for the fitness tracker. This was medically significant. According to medical charts, The fitness tracker had me at the pre-hypertension level. The professional blood monitoring device indicated high blood pressure, which was correct..7. To conserve electricity, the LED light turns off after a few seconds. If the user wants information, he has to press the bottom button and cycle through the different screens...Based upon the above mentioned problems, the value of this product is limited to two functions. It is a good heart beat counter. Second, time, day, and date were accurate...-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------..UPDATE: It stopped working after 1.5 months. Everything was blank. Charging did nothing. These problems were relayed to the vendor, HONYX. In response, the company refunded my purchase..For being responsive and a responsible seller, I add an additional star to my review.

Got it charged it ( which means take the wrist strap off to expose a usb connection ) Charging was a little tricky you have to wiggle around in usb port until it indicates it is charging. It quit with 10 hours. Played around with it for a few hours got it to charge and it worked for 6 hours. When it fails the display is completely dead. Trying to charge did not help the second time. The positive side is the app worked with IOS and it recorded sleep, heart rate, blood oxygen , fatigue . It was a lot of information while it worked, The display was a little small but sufficed. I would have been very happy if it would have kept working. Good price

As much as I dislike negativity, I can't give this product a good review. It's actually my first Amazon return!The O2 monitor reports incorrectly, the step counter is off by over 100 steps per half mile (tested while wearing another reliable device simultaneously), other functions seem sporadic a far as accuracy is concerned, it feels a bit bulky, it didn't come with helpful instructions and wasn't extremely intuitive, and finally the app to pair the device with (wearfit2) had a laughable English translation.

Either I'm too old (65) or too dumb to work it properly. I found it difficult to navigate the different screens. The instruction booklet is in microscopic print, especially the diagram showing the different screens. This watch has good reviews, and that's why I ordered it. Apparently it's just ME who has issues. This is the first "smart watch" I've tried, so I have nothing to compare it to. But I'm sending it back.

Had this for a week now. I struggled at first getting app downloaded for IOS but issue was my modem. Last night it kept waking me up because my o2 was low. Was a good thing. I was having issues with my CPAP and did great warning me. I have recommended to friend that just ordered one. Had 6 months and the charger plug just broke off. Will not be replacing with same one.

Broke immediately

After 1 day of using I took it off to take a shower and didn’t put it on till a few hours later when it had shut off and I couldn’t get it to work properly again after that. It turned on a few times but kept shutting back off and then it would not charge. So I returned it.

Tracker is great but I already need a new band after 3 weeks. Clasp broke off.