BOSE(R) Link AR1 Wireless Audio Receiver for BOSE(R) Lifestyle Wireless transmission technology easily enables audio in a second room without wiring between rooms Receives wireless signal up to 80' from the AL8 transmitter attached to your Lifestyle system Works through most walls and floors Proprietary Free Field circuitry limits interference from other devices-like cordless phones and wireless Internet connections AR1 receiver measures 3"H x 6"W x 6"D (7.6 cm x 15.2 cm x 15.2 cm)