This unique ear-worn miniature wireless device provides hands free amplification across a room. Place the miniature, battery operated wireless sound transmitter near the person who is speaking. Or use the direct connect cord to plug the transmitter directly into your TV or other audio device. Then place the miniature wireless ear-piece on your ear and immediately experience the benefit of a helpful boost of sound. Transmitter measures 2" x 1 1/4" (plus 1 1/2" antenna); earpiece measures 2" x 1 1/2" and can be worn on either ear. Transmitter works on 2 AG13 button batteries or AC power supply (both included). Receiver also uses 2 button batteries (included).