Feature: 1. Adopt VHF technology long distance wireless transmission easy no wire interference can the transmission distance of 50 meters. 2. Wider frequency range less interference easily and perfectly present your voice. 3. Strict complete electronic circuit control directly gain the rich sound from the microphone. 4. Suitable live performances meetings churches schools auditoriums gatherings etc. 5. Wireless design simple and easy to carry and quality assurance . Specification: Condition: 100% Item Type: Wireless USB Microphone Material: Plastic Colour: As Pictures Shown Weight: Approx 585g/20.6oz Modulation System: VHF Frequency Range: 220-270MHz Frequency Stability: ≤30ppm Comprehensive Distortion: ≤0.5% Dynamic Range: >90dB Audio Output: Mixed 0- Equilibrium 0- Channel Group Number: Dual Channel Sound Head: Moving-Coil Distance: 50m/164ft Converter Battery Type: Lithium Batteries Battery is Included Converter Battery Capacity: 1500mA Microphone Battery Type: AA Without Battery Package List: 2x Microphones 1x Transverter 1x Adapter 1x USB Cable 1x Instruction