1. BT version: v5.4. Chip: AC6983D2.
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 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). Total working time: 28 hours.
13. LED indicator.
14. Battery display: supports for iP phones and some Android phones.
15. Supports leader-follower switching, voice assistant activation, songs switching, songs play / pause.
16. Headset automatically turns on when taken out from the charging case, automatic pairing. Headset automatically turns off when placed into the charging case.
17. Sizes: 61 × 48 × 27mm.
18. Total weight: 46.5g. Single earbud weight: 4.3
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