BL-31 140mAh Clip On Retractable Wireless Earphone
Chip: JL6976D4
Bluetooth version V 5.4
Transmission distance: 10 meters
Charging voltage: DC5V
Charging time: 20 minutes
Talk time: 20 hours
Music time: 20 hours
Standby time: 180 days
Battery capacity: 140mA
phone number display, volume value display, power display, music status display
