The Humminbird HDR 650 In-Dash Digital Depth Sounder gives you instant, reliable digital depth readings, and offers customizable bezel and face colors to complement installed gauges. This unit comes packed with a transom mount transducer. Bezel colors included: White, Black and Chrome. Face plate colors included: White and Black. The unit is easy to install into an existing 2-1/8 inch gauge opening, completely waterproof, has an easy to read backlit 1.25-Inch LCD, shallow and deep depth alarms, and reads in feet, meters, or fathoms. Package includes a 200KHz transom mount transducer, alarm buzzer, installation hardware, and owner-Feets manual. Dimensions: 2.4-Inch Dia. x 4.75-Inch Deep. One year parts and labor warranty.