I AM A BUY OF XIAOMI PRODUCT AND I LIKE IT.|
i buy mi band 2 from mi.com
After i use it from 10-20 days i realise that the heart rate senser does not work good with the black colour skin person i test it on 5-7 person body the band heart rate only on white skin..
so i say that if u have same problem as i have plz reply and get mi know about it
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