Package Included: 1/2 x Microphone 1 x USB Receiver 1 x 3.5mm Audio Cable 1 x 3.5mm to 6.35mm Adapter Specifications: Model: V10 Color: Black Material: Plastic+Metal Microphone Size: approx. 24.5x5cm Audio cable length: approx. 60cm USB Receiver Size: 8x2.5cm VHF Frequency Range: 200MHz-270MHz 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. 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.