One of the coolest and good looking gadget I found in market.the main advantage for mi band is its design.we can know number of steps we walked and it is used as watch also. coming to battery capacity I charged once in a month.
with mi band we can connect to mobile through bluetooth and we can know the battery capacity of band, it will track number of steps you made, when you connect with monile blutooth you will receive your call notifications, watsapp and twitter notifications in band and it is a water resistant band.
simply its a good gadget at its price point considering the rivals in the market.