Product Specification:1.Bluetooth specification:V5.02.Bluetooth Profile:A2DP,AVRCP, HFP;HSP3.Working voltage:3.1V~4.2V4.Charging voltage:5V-1A5.capacity of the headset: 40MAH6.capacity of the storage box:300MAH7.Transmission distance:>10M8.Call time:3.5-4h9.Play time:4-5h10.Waterprof :IPX511.Charging time of headset:1 h12.Charging time of the Charging box:2h13.Support system:All Bluetooth devices and mobile phonesProducts include1 * One pair of Bluetooth headsets1 * Charging box1 * Charging cable1 * User Manual