It has more excellent design for sport. Also it could choose 3 model to save power. Phone mode, SIM card work, can make call and with full function. The bracelet mode include information sync, sport records. And the watch mode, more save time only show the time, in this mode, use about 5 days.
NO.1 G8 sports Bluetooth 4.0, Support with Android system and IOS system. Second-generation heart rate test more accurate, Nano SIM card support call without needing any other phone.