2PCS Professional VHF Wireless Microphone Handheld Mic System Karaoke w/Receiver Product Features: Adopting VHF technology, remote wireless transmission makes operation easier without annoying wires, and can achieve 20-50m of the transmission distance. Broader frequency range, less interference, showing your voice easily and perfectly. Adopts the exacting complete electronic circuit control, and captures rich, full-bodied sound from sources that are directly in front of the microphone. For all events like Karaoke, live performances, conferences, church, school, hall, party, etc. Can use 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. Product Specification: Type: VHF Wireless Microphone Color: Black Material: Plastic + Metal Wireless receiving range: 20-50 meters Frequency: 261.8 MHZ Power supply: 2 x AA battery (not included) Operating temperature: -10 - 50 Scope of application: Universally used in various size speakers, amplifiers, power amplifiers, computers, SLR cameras, televisions and other equipment. Package Included: 1/2 x Microphone 1/2 x USB Receiver 1/2 x 3.5mm Audio Cable 1/2 x 3.5mm to 6.35mm Adapter