Humminbird 797c2 SI Combo 5-Inch Waterproof Marine GPS and Chartplotter Top of the line fish finder and 16-channel WAAS/EGNOS GPS chartplotter, packed with every feature 5-inch, TFT LCD display with 640 x 480 pixels of resolution in 256 colors for enhanced separation Side-imaging sonar to 180 degrees, and dual 60-degree, and 20-degree beams for better bottom definition to 1,500 feet Built-in 4 nautical mile resolution UniMap of USA inland lakes, rivers and coastal areas Measures 6.9 x 7.7 x 4.5 inches (W x H x D), and backed by limited 1-year warranty