1. Bluetooth version: 5.3

2. Transmission range: 10 meters

3. Sensitivity: 98±3dB

4. Frequency response：20Hz-20KHz

5. Speaker：φ10mm 16Ω

6. Battery：earphones: 40mAh*2, Charging case：280mAh

7. Charging voltage： 5V/0.8A

8. Charging time：about 2H

9. Play time: 6.5H(50% volume)

10.Talking time: about 5H

11. Weight: about 64g

12. Waterproof：IPX5