1. Bluetooth version: 5.0
2. Signal-to-noise ratio: about 85dB
3. Frequency response: 70Hz-20kHz
4. Battery capacity: 4500mAhx2
5. Charging method: fast charging 5V/9V/12V
6. Charging time: about 3.5h
7. Charging interface: USB Type-C
8. Playback time: 6-8h (medium volume playback)
9. Playback function: Bluetooth playback, U disk playback, TF card playback, AUX-in input
10. Singing function: wireless/wired karaoke
11. Live broadcast function: OTG wired live broadcast
12. Instrument singing: instrument/microphone wired connection
13. 70W rated high power, high-resolution singing and listening
14. Comes with 1 high-sensitivity wireless microphone, OTG live broadcast and internal recording, music/karaoke dual EQ mode