Product Name: K2 Android TV Box PC Home KTV Mini Karaoke Echo Mixer System Digital Sound Audio Mixer Singing Machine + 2 Wireless Microphone Model NO.: K2 Output Impedance: 50-1000? Wireless Technology: UHF Connector(s): USB Sound Field Force: Pressure Type Transducer Principle: Electrodynamic Microphone Sound Channel: Stereo Directivity: Uni-direction Signal Transmission: Wireless Application: Music, Voice Style: Headset Microphone Color: Black Input Voltage: AC 100-240V Material: ABS + metal Trademark: OEM Transport Package: Color Box Specification: 10cm*8cm*1.9cm (L*W*H) Origin: Guangdong Product Description K2 Android TV Box PC Home KTV Mini Karaoke Echo Mixer System Digital Sound Audio Mixer Singing Machine + 2 Wireless MicrophoneProduct Features:1.Color: Black2.Material: ABS + metal3.Product size: about 10cm*8cm*1.9cm (L*W*H)4.Input voltage: AC 100-240V5.Frequency: 50--60HZ6.Output voltage: DC 5V7.Pickup: Low noise moving-coil8.Microphone type: Wireless9.FM mode: FM/VHF10.Frequency: 230MHz-270MHz11.Microphone core sensitivity: -76 ± 3DB12.Transmit power: 16DBm13.Effective distance:> 20M14.Receiver sensitivity: -105DB15.Frequency response: 50HZ-17KHZ16.Signal to noise ratio:> 100dBV17.Distortion: <0.5%18.USB interface type: Mini USB19.The USB Audio port canconnect androidbox,computer and smart TV20,System requirements: for Android 4.1 or abovePackage Included:1x Main unit2x Wireless Microphone1x USB cable1x DC power cable1x MicroUSB cable1x 3.5mm audio cable1x 3.5mm to 2RCA jack audio cable1x English user manualPhotos Show :