Humminbird 858c Combo 7-Inch Waterproof Marine GPS and Chartplotter with Sounder 7-Inch Diagonal Screen 480V X 800H Pixel Color Screen 16:9 Color TFT Screen 1500ft, 2000ft DualBeam PLUS Sonar If it’s time to get serious, it’s time for the new Humminbird 858c. These impressive combo units are a blend of form and function, with a generous 7″ screen, featuring a 16:9 aspect ration and incredibly clear picture quality. With Humminbird DualBeam PLUS sonar, the 858c […]