Humminbird 581i 5-Inch Waterproof Marine GPS and Chartplotter with Sounder 5-inch LCD display 640V X 320H Pixel Screen 16 Level Grayscale 800 ft. Depth Capability DualBeam Sonar 250 Watt, 83/200KHz Dual Beam Fishfinder 5-Inch Diagonal Screen 640V X 320H Pixel Screen 16 Level Grayscale 800 ft. Depth Capability DualBeam Sonar