Sirius SC-FM1 Starbase Satellite Radio FM Modulated Tuner System Compatible with virtually all OEM or aftermarket radios 2-piece design with compact tuner module and dash-mountable display Connects to radio via antenna jack or RCA jacks Backlit 3-line LCD screen displays artist and song title information Display: 4 1/2" W x 1 1/2" H x 3/4" D