1. Bluetooth Version: 6.0
2. Chip: JL6983D4
3. Bluetooth Protocol: A2DP/AVRCP/HFP/HSP
4. Transmission Distance: about 10 meters
5. Call Duration: 3.5H
6. Music Playback time: 4.5H
7. Standby time: 36H
8. Battery Capacity: 25/300mAh
9. Charging time: 2H
10. Speaker: Φ13mm
11. Speaker Sensitivity: 116±3dB
12. Frequency Response: 20Hz~20KHz