Bluetooth version: 5.0 Channel system: dual channel Battery capacity: 3.7V/300mAh Bluetooth protocols: A2DP, AVRCP, HSP, HFP Standby time: about 16h (80% volume) Charging time: 2h Play time: about 16h (80% volume) Talk time: about 10h (80% volume) No return is applicable if the seal is broken
