The Pyle PDWMU214 is a Uhf wireless microphone system that provides reliable, distortion-free performance. Ideal for home theater, karaoke parties, and stage events, this system includes two handheld microphones and a receiver unit. The system offers a wireless range of up to 165 feet and features 32 selectable channels for interference-free performance. The system is easy to set up with plug-and-play audio and includes a Usb charging cable for the receiver. The microphones are battery-operated (2x Aa), and the receiver can also be powered via a rechargeable 18650 battery.