Mi is the fastest growing brand in this time of span.I brought mi band whether it released the way I learnt after I brought it.the watch I wear entire day and sometimes on even sleep I use to be.it is more stylish and good design and willbe ever count our sense of body in every moment of second.good watch in its price the battery backup is superb compared to other brand I had used i.e., fitbit.easy to wear and use and would not got any skin allergies and all.superb brand.it worth its price.