awei T20 Bluetooth 5.1 True Wireless Headset, T20

1. Bluetooth version: Jayli V5.3 AD6973
2. Battery capacity: 45mAh x 2/Charging cabin capacity 400mAh
3. Driver unit: 9mm
4. Charging time: 1.5H
5. Calling time: 5.5-6.5H
6. The best call distance: about 1M
7. Maximum transmission distance: about 10m
8. Support voice prompt
9. Frequency response range: 20-20000Hz
10. Type-C interface
11. IPX4 level strong waterproof and sweat -proof