Lowrance HDS-7 7-Inch Waterproof Marine GPS and Chartplotter with 83/200HZ transom mount transducer (Enhanced U.S. Basemap) Bundles Lowrence HDS-7 GPS chartplotter/fishfinder with U.S. Expanded Basemap and 83/200kHz transducer with temperature sensor and 20-foot cable. 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