Bluetooth design: Bluetooth 4.0
Language: English and Simplifies Chinese
Waterproof: Yes (can swim )
IP rating : IP67
Screen type :OLED
Operating Mode : Touch Screen
Compatible : Androin /Ios 7 and above system
people : Female table / Male Table
Available color : Black
Type of battery : Lithium polymer battery
batterry capacity: 70mAh
standby : 20days
Charging time: 2-3 hours