Lousy for tracking sleep and heart rate.

I bought this product for my husband. The primary reason he wanted it was to track sleep. It does a poor job of it. It is constantly incorrect with the time of going to sleep. Very frustrating! He has stopped using it. Also, the pulse is not accurate. He tested it against a chest heart monitor and it was constantly incorrect. I would not recommend this product. At the price, it’s a rip off.

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