This Garmin Dual Beam Transducer
replaces the one included with your echo™ series fishfinder. A 500 W 4-pin transducer; it has an operating frequency of 77 to 200 kHz; a beamwidth of 45 to 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 a 6-pin Garmin sounder, transducer adapter cable part number 010-11614-00 is required. When using with the echoMAP 50s/70s, transducer adapter cable part number 010-11948-00 is required.