Fantastic! It has lots of various sports that it can track and seems to track my sleep very accurately. The app guesses correctly how i feel when I wake up and gives an analysis. this watch also does relatively well tracking heartrate, if it gives you a false reading it usually just needs to be closer to your skin on the underside or worn tighter, OVERALL GREAT PRODUCT! The battery really does last a week! 8 days and counting! I've had it a few weeks and hope it holds up.
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