Garmin Dual Beam 010-10249-20
This dual beam transducer replaces the one included with your echo™ series fishfinder. A 500 W 4-pin transducer; 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.