Product parameters Bluetooth version 5.0 Bluetooth power class 2 Charging mode power adapter output (DC5V 150mA) Support protocol ead set/handsfree/A2Dp/AVRCP Standby time is about 10 days Battery capacity 260 mAh The duration of the call is about 6 hours. Continuous playback time is about 6 hours Product net weight: 55g Packing specification Number of boxes: 20PCS FCL size 64CM*34.5CM*18.5CM Product packaging size 16CM*15CM*5.5CM Bare metal size: 15.5*13CM Bare metal weight 60G