awei T13 Pro Bluetooth Sports Headset(White)

1. Bluetooth version: Jayli V5.3 (upgraded version, ultra -low power chip) AD6973D4
2. Battery capacity: 50mAh x 2/Charging cabin capacity 300mAh
3. Driver unit: 8mm
4. Charging time: 1.5H
5. Calling time: 9H
6. The best call distance: about 1M
7. Maximum transmission distance: about 10m
9. Support voice prompt
10. Frequency response range: 20-20000Hz