Was a waste of money. My personal trainer told me to buy a device so he can monitor my heart rate during our workouts. He also mentioned just getting something that isn't too expensive as that's the only reason I would use it. So I watched the video this guy made and I was convinced it would work. This thing is far from accurate, when I'm exercising and checking my heart rate it shows 50 or 70 and when I'm resting and checking it shows in the 100 range. Out of curiosity I wanted to track my sleep, this feature NEVER worked. It wasn't as easy as he showed, and now let me tell you something about the band. I have purple, TERRIBLE. It gets dirty so easily that on the first day of use the bracelet looks like I've had it for a year. i will send it back Do yourself a favor and don't shop. You get what you pay for, and this cheap alternative to Fitbit isn't worth the time, money, or frustration.
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