Fishfinding with Garmin DownVü™ Scanning Sonar   Garmin DownVü scanning sonar provides a nearly photographic view of fish and structure under the boat Includes an all-in-one advanced HD-ID™ and D

With its bright, crisp 5-inch high-resolution VGA color display, the echo 551dv has Smooth Scaling™ which provides smooth transitions from shallow to deep water and back again. Narrow-to-wide viewing