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