MI is very famous Chinese brand. it gives value for money product but band is not that good. I have bought MI band 1S last week for rupees 999
it is good from outer aspect. It's battery ife is also good but when you use for days, you experience some problems .
First thing I have noticed that it does not show you real time it's should show time so that it can take place of wrist watch .you cannot put band and watch simultaneously.
Next thing I don't like about it is its design. They say that it shows blink of light when you turn your hand in specific direction but it does not work properly.
Also it does not track heart rate and it does not show your sleep when you sleep at afternoon
Overall it's a good band but not the best you can have some other by investing some more money.