Bluetooth version: v5.0+edr.
2. Transmission distance: 10m.
3. Charging compartment battery capacity: 300mah.
4. Headphone battery capacity: 25mah.
5. Charging voltage: dc 5v.
6. Speaker: 16 ohms.
7. Frequency response: 100hz-20khz.
8. Output power: 10mw.
9. Signal to noise ratio: greater than or equal to 90db.
10. Working voltage: 3.7v.
11. Distortion: 1%.
12. Talk time: about 5 hours.
13. Music playback: about 5 hours.
14. Standby time: greater than or equal to 30 hours.
15. Charging time: about 2 hours.