Here are ZERFUN rechargeable wireless microphones! They are equipped with independent controls for volume, echo, treble, and bass. They are the perfect choice for home karaoke, meetings, parties, churches, DJ events, weddings, and so many more applications! These well-made cardioid wireless mics have the ability to 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 can be effortlessly separated from the background noise. For Output, the 1 4 inch 6.35mm receiver output is designed specifically for speakers, PA speaker systems, power amplifiers, or other devices with a MIC input Please note This microphone set is not suitable for phones, PCs, or cameras . For Transmission Range, the ZERFUN wireless microphone has a reachable range of up to 164 feet Outdoor , and its 2.4GHz frequency range complies with the FCC regulations. For Battery Information, both the microphone and the receiver have built-in rechargeable batteries. When full charged, microphone working time about 8-10 Hours, receiver working time about 4-5 Hours. Package List Includes ZERFUN rechargeable wireless microphones x2 receiver x1 charging cable x2 microphone windscreen x2 antiskid ring x2 user manual x1. Genuine ZERFUN Wireless Microphone products come with supportive 24-Hours After-Sales Customer Service, 12-Month Manufacturer Assurance.