TWS headset “EQ4 Graceful” air conduction

EQ4 Graceful, air conduction TWS headset, BT v5.3, charging case battery 500mAh, headset battery 110mAh, 12 hours of use and 300 hours of standby

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: 14mm.
6. Impedance: 32Ω ± 15%.
7. Frequency response: 20-20000Hz.
8. Sensitivity: 98dB ± 3dB.
9. Battery capacity: charging case 500mAh, headset 110mAh.
10. Charging case input: DC5V, Type-C.
11. Charging time: about 2 hours for charging case, about 1.5 hours for headset.
12. Talk / music time: 12 hours (80% volume). Standby time: 300 hours.
13. Air conduction technology. Hanging on ear design, opened ears.
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. Sizes: 98 × 66.5 × 30mm.
17. Total weight: 87g. Single earbud weight: 10g.