L-21 9D Sound Effects Bluetooth 5.0 Touch Wireless Bluetooth Earphone

Product parameters:
1. Bluetooth version: V5.0 + EDR
2. Support protocol: A2DP1.3 / HFP1.6 / HDP1.2 / ACRCP1.6 / D11.3
3. Operating range: about 10m
4. Battery capacity of charging box: 350mAh
5. Call / music duration: about 4H
6. Standby time: about 120H
7. Charging time: about 1H
8. The number of times the charging box charges the headset: about 20 times