Wiwu Soundcool Black Bluetooth Neckband Earphone

Bluetooth solution: JL7003
Bluetooth version: 5.4
Bluetooth protocols: A2DP, AVRCP, H-SP, H-FP
Working frequency: 2.400GHz-2.480GHz
Transmission distance: 10-20M
Battery capacity: 280mAh
Music life: about 25 hours
Talk time: about 25 hours
Standby time: 500H
Speaker specification: Φ10mm
Charging interface: TYPE-C
Charging current: 5V-150mA
Charging time: 2 hours