1. BT version: v5.3. Chip: JL AC6973D4.

2. Supported protocols: Headset, Hands-free, A2DP, AVRCP.

3. Transmission distance: 10m.

4. Transmission frequency: 2.4Hz.

5. Speaker unit: 13mm.

6. Impedance: 32Ω ± 15%.

7. Frequency response: 20-20000Hz.

8. Sensitivity: 98dB ± 3dB.

9. Battery capacity: charging case 320mAh, headset 40mAh.

10. Charging case input: DC5V, Type-C.

11. Charging time: about 1.5 hours for charging case, about 1 hour for headset.

12. Talk / music time: 7 hours (80% volume). Standby time: 180 hours.

13. LED digital display of power level. Charging case with transparent window on cover.

14. Supports leader-follower switching, voice assistant activation, songs switching, songs play / pause.

15. Headset automatically turns on when taken out from the charging case, automatic pairing. Headset automatically turns off when placed into the charging case.

16. Battery display: supports for Apple phones and some Android phones.

17. Sizes: 62 × 53 × 28.5mm.

18. Total weight: 47g. Single earbud weight: 3.7g.