Garmin Dual BeamThis dual beam transducer replaces the one included with your echo series fishfinder. A 500 W 8 pin transducer, it has an operating frequency of 77 200 kHz; a beamwidth of 45 15 degrees; and mounts on a 0 to 70 degree transom. Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat. When using with the echo fishfinders, transducer adapter cable, 010 11947 00, is required. Transducer, 010 10249