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 regula