Product name XO-BE7 Mini wireless bluetooth earphone Basic parameters Product model: BE7 Product color: white, black Product size:45 X 30 X 22mm Package size:130X130x28mm Net weight: 20g Audio parameters Bluetooth: V5.0 transmission distance About 10m Support protocol: A2DP/AVRCP/HSP/HFP sponse frecquency.2.402GHz 2.480GHZ Audio parameters Headser battery: 50 mAh storage capacity : 300mAh Charging time : 2.5 h music duration :3 h Charging interface: Micro-USB/DC5V-50mA