I had purchased this fit band in the December its an Awesome Gadget .Bought it directly from the mi website for 750rs
Where in flipkart or amazon it would cost 1200rs.But the drawback from purchasing from mi website is u cannot return the device in any conditon
My phone had android version of 4.1.1 which the miband did not support hence had to return it. But they refused had to buy a new phone as it is my phone was old .
The battery life is awesome it gives me accurate data of sleep and deep sleep.Incoming calls and alaram
Its really a good buy.
Go For It Guys