Product Specification:1.Model:N292.Bluetooth specification:V5.13.Bluetooth Profile:A2DP,AVRCP, HFP;HSP4.Working voltage:3.1V~4.2V5.Charging voltage:5V-1A6.capacity of the headset: 50MAH7.Transmission distance:>10M8.Call time:4-5h9.Play time:4-5h10.Waterprof :IPX511.Charging time of headset:1hProducts include1 * One pair of Bluetooth headsets1 * USB Charging1 * User Manual