1. SY6 Sound Card Karaoke Recording Audio Live Broadcast KTV Sound Card Audio Machine 2. The 4000mAh battery can last for a long time to meet your live broadcast or singing needs 3. Bluetooth/accompaniment/TF card/OTG input, multiple connection methods, easily handle more scenarios 4. IOS/Android/Windows fully compatible, intelligent compatible with 99% live broadcast software 5. Digital DSP processing chip is adopted to realize independent adjustment, high and low pitch, reverberation, accompaniment, recording, etc. 6. Pop/Subwoofer/Pure Vocal mode, one button switching, you can choose the desired effect as you want 7. Specification: 8. Function: 9. Sound card function: yes 10. Bluetooth speaker function: yes 11. Card reader: TF card 12. Built-in Battery Playback: Yes 13. Play while charging: yes 14. Low Power Indicator: Yes (Beep) 15. Supported audio formats: MP3 WAV WMA FLAC APE 16. Sound adjustment: treble, mid-bass adjustment; accompaniment, reverberation, recording adjustment; microphone volume adjustment; speaker volume adjustment 17. Lighting control: Aperture with self-flashing seven-color lights; left and right potentiometers always turn on three-color lights; spectrum light under the potentiometer jumps with the size of the music 18. Audio switch: Yes (there is no sound after the audio is turned off, and the sound card function can be used normally) 19. Function keys: 12 keys 20. Sound effect keys: 6 keys 21. Special effect keys: 12 keys 22. Bluetooth switch: support 23. Bluetooth playback operations: pause, previous song, next song 24. Power Specifications: 25. Power supply (adapter): DC 5V/3A 26. Battery: Built-in 7.4V/4000mAh (when the power amplifier is turned on, the battery can be used for 3 to 3.5 hours) 27. Power indicator light (LED: power on: white light; charging: red light; low power state: prompt tone 2 minutes/time 28. Charging time: 29. Quick charge (power off) 4.5-5 hours 30. Slow charge (charge while playing, power amp moderately on) 9-12 hours 31. Speaker Specifications: 32. Model: full frequency speaker 4Ω5W 33. Size: 52x52x32mm 34. Rated impedance: 4Ω±15% 35. Rated power: 5W 36. Frequency range: F0-20KHZ 37. Characteristic sensitivity: 84dB±2dB 38. Resonant frequency: 400HZ±20% 39. Harmonic distortion: ≤5% 40. Audio Performance Specifications: 41. Analog audio output: LT/RT, stereo 42. Dynamic range 1kHz: ≥80dB 43. Crosstalk: ≥70dB 44. Signal-to-noise ratio: ≥85dB 45. Output level (Vrms): Vrms (1.0~2.0V 10kR) 46. Headphone output power: 5mW x2CH 47. Speaker output power (rated value): 5W x2CH 48. Speaker output power (peak to peak): 10W x2CH 49. Frequency response: 5MHz