Bought in amazon. Maybe I was so lucky, but 1) at first they showed that my pulse was in the extreme zone all the time (70-90 beats per minute. How did I just live?). Then I tweaked it a bit, now it seems to be normal. 2) "Smart" alarm clock. If you indicated to wake up within 20 minutes of the end time, you will wake up 20 minutes before it. Not 152022 or a minute before, but 20 as you set (in mi band 2 it was better with this)
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