Lowrance HDS-7 7-Inch Waterproof Marine GPS and Chartplotter (Enhanced U.S. Basemap) 6.4-inch SolarMAX Plus display is sunlight viewable, for bright and clear wide-angle viewing. Built-in Broadband Sounder for ultra-sensitive, high-definition fish finding in all cover, in thermoclines, and in all water conditions. Super sensitive 16-channel internal GPS antenna with faster time-to-signal lock and precision position, for high-definition GPS and mapping. Advanced networking and expandability with Ethernetworks and NMEA 2000 performance networking options Expanded two-year limited warranty