Bluetooth solution: Bluetrum 5756

Bluetooth version: V5.4+EDR

Wireless frequency: 2.4GHz

Supporting protocols: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3

Transmission distance: 10 meters

Speaker: 10 centimeter copper ring speaker

Battery capacity: 30mAh+200mAh

Charging voltage/current: 5V/1A

Play/call time: 4 hours

Charging time: about 1 hour

Standby time: 60 hours