Features: 1For DSP audio processing chip, full of sound quality. Allow you to enjoy the KTV effect at home. 2U segment high frequency transmitting chip, 30m/98.4ft ultra long distance. Support optical fiber high definition digital audio signal decoding. 3Rich interface, compatible with all input devices, new HDMI for ARC audio return function. 4USB sound card digital audio function, support part of the APP recording scoring function. 5The microphone system is easy to use with multiple systems and is perfect for any professional or recreational activity. 6Bluetooth 5.0 wireless audio transmission with high rate and low loss. 3.5 audio input port is reserved to make sure traditional audio input. Condition: 100% Brand New Item Type: Karaoke Machine Color: As Pictures Shown Weight: Approx. 855g/30.2oz Model: K8 Chip: for DSP8048A Bluetooth Protocol : 5.0 Ports: Bluetooth 5.0, Fiber Input, USB Sound Card, 3.5 Audio Input, HDMI (for ARC) Input Sensitivity: 108dbm 12dB SINAD Audio Dynamic Range: 106db Frequency Response: 20Hz?18khz Distortion: < 0.5% Power Supply Voltage Range: (2.0V~ 3.6V) Operating Current: 0.3% U Segment Transmitting Range: 30m/98.4ft Package included: 1 x Karaoke Machine 2 x Wireless Microphone (1.5V AA battery not included) 1 x 3.5mm audio cable 1 x USB A/A Cable 1 x 3.5mm to for RCA Cable 1 x AC Plug 1 x Manual