1. BT version: v5.3. Chip: AC6973.
2. Supported protocols: Headset, Hands-free, A2DP, AVRCP.
3. Transmission distance: 10m.
4. Transmission frequency: 2402-2480MHz.
5. Speaker unit: 6mm.
6. Impedance: 16Ω ± 15%.
7. Frequency response: 20-20000Hz.
8. Sensitivity: 98dB ± 3dB.
9. Battery capacity: charging case 500mAh, headset 30mAh.
10. Charging case input: DC5V, Type-C.
11. Charging time: about 1 hour for charging case, about 1 hour for headset.
12. Talk / music time: 4 hours (80% volume). Standby time: 150 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: 55.2 × 47 × 30mm.
18. Total weight: 41.8g. Single earbud weight: 3.6g.