Features 1. Industrial design, stylish and novel appearance 2. DSP audio processing chip, rich and full sound quality, easy to sing the star effect 3. Designed by the design team, fashionable and retro 4. Aluminum alloy microphone, full of texture 5. The surface of the host is treated with UV + gold plating and chrome plating process, and the atmosphere is exquisite 6. U-segment high-frequency emission chip, 30m ultra-long distance 7. Rich interface, compatible with all input devices 8. Newly add HDMI ARC audio return function 9. USB sound card digital audio function, support some APP recording and scoring function 10. Support optical fiber HD digital audio signal decoding 11. Bluetooth 5.0 high rate low loss wireless audio transmission 12. Retain 3.5 audio input port to ensure the traditional audio input 13. Port: Bluetooth, optical fiber, USB sound card, 3.5 audio, HDMI (ARC) 14. Frequency range: 700MHz-780MHz 15. Frequency response: 20Hz-17.5KHz 16. Receiving sensitivity: 99dBm-82dB 17. Audio dynamic range: >=100dB 18. Transmitting power:>=100dBm Packing List 1 x K8 Home Wireless Karaoke Box 1 x USB Cable 1 x DC USB Cable 1 x Power Adapter 1 x 3.5mm Audio Cable 1 x 3.5mm to 2RCA Jack Audio Cable 1 x User Manual 2 x Wireless Microphone (1.5V AA x2 Battery Not inclued)