Mi Band is one of the really cool and useful accessories for android. This has many great features, some of them that I observed, I will write in these review.
First and best thing about it is the battery backup. It can easily last for more than a month( in my case actually 40 days)
Next is its compatibility, I checked it with three android phones, with all of them it works flawlessly
At this price this gives so much functionality. it can count number of steps, heart rate, sleeping time. though last two are not accurate actually.
But the biggest problem is its availability, it is very rare in the shopping websites. but Miband is completely worthy.