Great value for money product by Xiaomi. MI band is helpful to monitor our daily fitness level. It tracks walking distance and calculate calories burned. You can set daily exercise targets. It has alarm vibration function. It has 3 led lights. it has Bluetooth connectivity with mobile to join MI fit which shows our activities. It help to maintain sleep record. SMS , call notification . It’s best part is it is water resistance and having around 25 days battery back up. It is secure also it has aluminium alloy sensor which is of good quality. It’s very sturdy also. Everything you expect from band MI gives you in very less price rs. 999 only. Purchase it and enjoy . I personally bought it. Became fan of MI product . Very cheap and useful .