The 5" color screen of the Humminbird 688ci HD DI Combo offers excellent internal GPS precision at a 480x800-pixel resolution, a depth range of 600 ft. and the power of SwitchFire™ sonar. Program up to 2,750 waypoints and 45 routes to keep track of productive waters. With a built-in Contour XD map, locating and targeting fish is easy. 1,000 watts (RMS)/8,000 watts peak-to-peak power output. LakeMaster®/Navionics Gold/C-MAP compatible.