I am Using this band since last 6 Months
*What Is MI Band?*
Mi band is band that fits in your hand like wrist watch and calculate your daily activity like how much you sleep every night, how much you run or walk everyday.
*Some Special Features*
Can count daily sleep hour’s(*Also can count deep sleep*)
Can count How much you burn calorie.
Will vibrate band when you got any phone calls.
*Battery Backup*
Once you full charge MI Band, Believe me you will no need to charge next 70 days(*2 Months 10Days*)
*Funcationality*
As it is samrt band.It comes up with a Mi band application For *Android* & *iOS*, Sorry for windows phone user.There are no official mi bnad app for windows phone user, But there are some unofficial app.
I am Using it since last 6 months it works well and no issue with it.It is also water proof so that you can’t miss 1 count.