Features: Adopts UHF technology, remote wireless transmission makes operation easier without annoying wires, can achieve 80m of the transmission distance. Broader frequency range, less interference, showing your voice easily and perfectly.  Adopts the exacting complete electronic circuit control, capture rich, full-bodied sound from sources that are directly in front of the microphone. For all events like Karaoke, live-performances, conference, church, school, hall, party, etc.  Can used with 3.5mm and 6.35mm female interface devices.  USB receiver power supply by USB charger,powbank and more.  Suitable for studio / karaoke / radio / etc.  Suitable for teacher guides, sing, speech conference and etc.     Specification: Color:Black;  Material:Plastic+Metal;  Microphone Size:approx. 24.5x5cm;  Audio cable length:approx. 60cm;  USB Receiver Size:8x2.5cm;  VHF Frequency Range:268.85mhz (with screen);  Audio Frequency Response:40Hz-15KHz;  Audio Dynamic Range:>100dB;  Audio Output:0-200mv;  Receive Distance:≥80M;  Transmitter Working Current:<80mA;  Power supply:2 x AA battery (not included);  Operating temperature:-10 - 50℃;  Fitment:All equipments with wired microphone interface are suitable;     Package included: 1 x Microphone;  1 x USB Receiver;  1 x 3.5mm Audio Cable;  1 x 3.5mm to 6.35mm Adapter