1. BT version: v5.4. Chip: AC6973.
2. Supported protocols: Headset, Hands-free, A2DP, AVRCP.
3. Transmission distance: 10m.
4. Transmission frequency: 2402-2480MHz.
5. Speaker unit: 13mm.
6. Impedance: 32Ω ± 15%.
7. Frequency response: 20-20000Hz.
8. Sensitivity: 98dB ± 3dB.
9. Battery capacity: charging case 350mAh, headset 35mAh.
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: 6 hours (80% volume). Total working time: 30 hours.
13. Transparent case cover and headset stems with built-in lighting effects. Touch control.
14. Supports leader-follower switching, voice assistant activation, songs switching, songs play / pause.
15. Open the charging case and take out headsets to turn it on and pair automatically. Headset automatically turns off when put in the charging case and cover is closed.
16. Battery display: supports for iP phones and some Android phones.
17. Sizes: 54.5 × 51 × 26mm.
18. Total weight: 38.5g. Single earbud weight: 4.2g.