Its one of the best band I have seen . It has good battery life . It gives us accurate data collection.and also it is available in very reasonable price it gives silent alarm and notifications and it is very very reliable . Inspite of these extremely well features there are some problems like its heart rate sensor digs into our skin . And the other is it needs a proprietry battery and also a good sign up app for its proper work and function . And unlike mi band mi2 band has a led display and it is also provided with a heart rate sensor . And it is one of the cheapest band available in market now a days