The Listening System, model WIR125, is a personal amplification system designed for use by individuals with hearing disabilities. This system includes a TX4 transmitter/charger, a RX3 Laualier styler receiver, and a TV Listening Microhone. The system can be used with the microphone or it can be connected directly to an audio output jack of a television or other audio device. The system receiver is compatible with wide-area systems. POWER: The receiver operates for 35 hours on a single 9-volt battery. DIMENSIONS: Operates over an area of approximately 400 square feet. WARRANTY: One-year warranty.