Garmin Echo 551 Sonar -
The easy-to-use Garmin echo 551c Sonar has excellent fish-finding power at a great value. Garmin HD-ID™ sonar reveals what's under the water with excellent target separation and image clarity. You'll be able to see fish, structure, and even your lure on the 5"-diagonal display with 256 colors and 640 x 480 VGA resolution. Garmin Smooth Scaling™ technology keeps you from losing sight of sonar history as the unit changes depth ranges. Sonar history rewind allows you to look at your past sonar, ensuring you won't miss anything. 500 watts of transmit power (RMS). Comes with 77/200kHz frequency (also supports 50/200kHz). Includes a quick-release swivel mount and transducer with FREE mounting kits for transom and trolling motors.