BT protocols: HSP/HFP/A2DP/AVR;Built-in lithium battery:2200mAh/3000mAh; Speaker specifification:52mm/4Ω/5W; Charging time:about 4H(2200mAh)/;Play time1:about 14h at Midium volume;Standby time:about 120h(2000mAh)
Replacement Warranty 3 Month