Bt V5.0, support most of bluetooth devices and lower power consumption
2000mAh charging case can full charge 2 earphones around 15 times, offer more 60 Hours musci time
With waterproof technology, no need to worry about water and sweat anymore
8mms dual drive units, enjoy 9D strong deep bass music sound 
Popular touch control function, support switch songs, phone call and call voice assiatant.
With 3 special function: Mini handled fan, flashlight and power bank for phone
Bluetooth specification:V5.0
Bluetooth Profile:A2DP,AVRCP, HFP;HSP 
Working voltage:3.1V~4.2V
Charging voltage:5V-1A
Battery capacity of the headset: 50MAH
Battery capacity of the storage box:3500MAH
Transmission distance:>10M 
Call time:3-4h
Play time:3-4h
Waterprof :IPX7
Charging time of headset:1h