The 768 Combo features a high resolution 16 level grayscale 640V x 320H 5 display, DualBeam PLUS sonar with 4000 Watts PTP power output, GPS Chartplotting with built-in UniMap, and advanced Fishing System capabilities. In addition, it includes 3 programmable preset buttons to save your favorite views. Maximize your angling experience with the Humminbird 768 fishfinder GPS system.