1.specification:V5.0 2.Profile:A2DP,AVRCP, HFP;HSP 3.Working voltage:3.1V~4.2V 4.Charging voltage:5V-1A 5.Battery capacity of the headset: 40MAH 6.Battery capacity of the storage box:300MAH 7.Transmission distance:>10M 8.Call time:2-4h 11.Play time:2-4h 12.Waterprof :IPX3...