Product Specification: 1.Model:M10 2.Bluetooth specification:V5.1 3.Material: ABS 4.Bluetooth Profile:A2DP,AVRCP, HFP;HSP 5.Working voltage:3.1V~4.2V 6.Charging voltage:5V-1A 7.Battery capacity of the headset: 50mAh. 8.Battery capacity of the storage Box:2000mAh. 9.Transmission distance:10M 10.Call time:4-5h 11.Play time:4-5h 12.Waterprof :IPX7 13.Charging time of headset:1 h 14.Charging time of the Charging box:2h 15.Support system:All Bluetooth devices and mobile phones;