Massive high-definition 10.4" super VGA display. Brilliant, pure-white LED screen/keypad backlighting. Superior clarity and up to an astounding 120 view of fish and structure. 8x zoom range. Phenomenal separation of fish targets from structure, baitfish, thermoclines, clutter, and bottom. Super-sensitive, 16-channel internal GPS antenna networks with NMEA 2000. Built-in enhanced U.S. base map includes coastal shorelines, 100,000 bodies of water and 5,000 enhanced lakes with high-detail shorelines and depth contours. Insight USA option provides coverage for continental U.S. inland waters and Great Lakes, plus U.S. coastal waters.