DUAL RECHARGEABLE WIRELESS MICROPHONES PRO ZERFUN Rechargeable Wireless Microphones with independent Volume, ECHO, Treble, BASS, Channel Control. Perfect for home karaoke, meeting, party, church, DJ, wedding, and much more. OUTPUT 1 4 Inch 6.35mm Receiver Output designed for Speaker, PA Speaker System, Power Amplifier or other devices with MIC Input Notice This microphone set is Not For Phone, PC, Camera . ZERFUN Wireless Microphones are well-made cardioid wireless mics which means they pick up noise unidirectionally Only when we speak towards the top of the microphone will there be a sound, while there will be no sound when speaking on the side . With this pickup pattern, the directional vocals are easy to isolate from background noise. BATTERY INFO Both microphone and receiver with built-in rechargeable battery. When full charged, microphone working time about 8-10 Hours, receiver working time about 3-4 Hours. TRANSMISSION RANGE The ZERFUN Wireless Microphone can support up to 260 feet range, 50 compatible frequencies on each channel 2 X 50 for interference-free reception. The UHF frequencies range within 500 - 599 MHz, are compliant with the FCC regulations. PACKAGE LIST ZERFUN Rechargeable Wireless Microphone x 2 Receiver x 1 Charging Cable x 2 Microphone Windscreen x 2 Antiskid Ring x 2 User Manual x 1. Genuine ZERFUN Wireless Microphone products come with supportive 24-Hours After-Sales Customer Service, 12-Month Manufacturer Assurance.