Product parameters:
1. Bluetooth version: BT 5.0.
2. Bluetooth effective distance: 10m.
3. Headphone frequency response range: 20Hz-40kHz.
4. Drive unit: 40mm.
5. Life time: 25 hours.
6. High power: 100mW.
7. Battery capacity: 500mAh.
8. Headphone sensitivity: 103dB.
9. Microphone sensitivity: -42dB.
10. Headphone impedance: 16 ohms.
11. Charging interface: Type-C.