This is a preowned kit that is in great condition (no batteries inclued) .   

ATW-R900a receiver and ATW-T901a body-pack transmitter with omnidirectional lavalier microphone.

Audio-Technica's System 9 is a four-channel frequency-agile wireless system designed to provide rock-solid performance along with easy setup and clear, natural sound quality. Featuring sleek, stackable, contemporary styling.