Garmin Airmar P72Garmins plastic in hull transducer is perfect for in hull mount, trolling motors or ice fishing. The 8 pin 500 W transducer has a depth of 900 ft; an operating frequency of 77 200 kHz; a beamwidth of 45 15 degrees. Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat. When using with the echo series fishfinders, transducer adapter cable, 010 11947 00, is required.