1. Bluetooth version: JL Bluetooth v5.0.
2. Transmission distance: 10 meters per ear: 35mAh.
3. Battery charge: 400mAh.
4. Playback time: 2-2.5 hours.
5. Headset function: adjust volume, switch songs, answer incoming calls, refuse to answer calls, hang up, Bluetooth playback, hands-free call, phone replay, Bluetooth reconnection, voice prompt, power display, magnetic charging.
6. Speaker: 10mm
7. Sensitivity: 108 +/- 5dB.
8. Impedance: 32 ohm
9. Frequency response: 20-20000 Hz.
10. Rated power: 15mW x 2
11. Support protocol: HSP/HFP/A2DP/AVRCP-
12. Headset color: black / white / blue
13. Headphones: high 3.9CM, long 1.8CM, wide 2.1CM.
14. Accessories include: USB charging cable, 3 pairs of silicone ear caps, English instructions