Humminbird 917c Combo 7-Inch Waterproof Marine GPS and Chartplotter Full-featured fish finder and 16-channel WAAS GPS receiver with chartplotting 7-inch TFT LCD screen with 480 x 800 lines of resolution in full color 60-degree, and 20-degree beam for both fish location better bottom definition to 1,500 feet Built-in 4 nautical mile resolution UniMap of USA inland lakes, rivers and coastal areas Measures 11.25 x 6.75 x 4.25 inches (W x H x D), and backed […]