This box features a professional wireless microphone set, including two handheld mics and a rechargeable receiver.The microphones are designed for clear vocal performance and feature a stable wireless connection suitable for karaoke and speeches.The set operates on UHF technology, with a transmission range of up to 100 feet for freedom of movement.The receivers are described as plug-and-play, compatible with PA systems, amplifiers, or any device with a 1/4" mic jack