1. Bluetooth version: 5.4
2. Transmission distance: about 10m
3. Music time: about 3h
4. Charging time: about 3h
5. Signal-to-noise ratio: about 85dB
6. Working voltage: 7.4V
7. Frequency response: 20Hz-20KHz
8. Battery capacity: 6000mAh
9. Speaker: 25W x 2
10. Support Bluetooth, card insertion, U disk, data transmission and other functions