Excellent battery life. On a single charge after two weeks of use, the charge stayed at 50%. All functions work as described. I haven't measured the accuracy of the data, but steps/heart rate/GPS distance seem reasonable. Phone calls show some Chinese characters but also the number, it doesn't bother me. Also, the spacing is metric, which isn't a problem for me either. I had no problems connecting to the phone app (Android phone). be simple, but I don't use it much. The only thing that could be better is the backlight, it's not very bright. Readability in direct sunlight is excellent. Overall, for the money I paid ($79.99), this is a great watch.
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