Main module cant be detached from the hand strap,
Hand is not like smartband strap
Its like normal watch strap but is made of soft silicon,
Its not completely water proof,
Only splash proof,
Charger not available inside box,
Calorie counter is not very accurate ,
Pedometer also not very accurate,
Sleep monitor also not accurate
Like if you wake up in middle of sleep for some work eg: toilet or washroom. And you again go to bed within 5 minutes it will consider you as woke up from 4am onwards,
Screen in not complete touch screen only a part of it is touch sensitive which should be used to control device,
Battery back up is worst about 4-6 days on one complete charge.