Every quality the tournament pros demand in a sonar is available in the FishMark™ 320. An exceptionally clear 320 x 320 Film SuperTwist pixel 5" diagonal display shows minute details and crisp bottom contours for a superior depiction of the world under the water's surface. The 10 levels of GrayLine® add precise image resolution with clean lines and sharp differentiation between surface and structure types. And 1,500-watt peak-to-peak power pierces the depths for precision detail down to a maximum depth of 800 feet. The 200 kHz Skimmer™ high-speed transducer with up to 60° coverage permits clean reception and accurate depth soundings even when the boat is on plane, running at top speed. Each comes with a 20° skimmer transducer. The transducer also has a built-in speed and temperature sensor, so you can stay on top of changing surface conditions throughout the day. A window split-screen data display permits you to keep a view of the entire water column while showing a zoom view or a large number display. FishReveal™ uncovers fish hidden within weed beds and other structure and the Hyperscroll™ option gives instant screen updates for precision work with finesse lures. Fish I.D. with FishTrack™ displays target depth readings above each fish symbol for quick and precise lure presentations. Screen and keypad lighting for low-light use. Full one-year warranty.