The watch is look awesome but battery life is not good after one and two calls battery will be drain and its not for 2 3 hours but its functions is good and the smart watch look awesme the material also good the functions of the watch also good like set Alarm and use calculater calling features and sleep timer how much you drink water all facility is given in U8 Smart watch I suggest you this Smart watch buy it but only for show off because everything is ok but only battery life is not good I hope you like my suggestion????