Lowrance HDS-7 7-Inch Waterproof Marine GPS and Chartplotter with 50/200kHz transducer (Insight USA Maps) Marine GPS chartplotter/fishfinder with full-color 6.4-inch SolarMAX Plus display High-sensitivity 16-channel GPS+WAAS antenna and integrated Broadband Sounder Built-in Insight USA map with highly detailed inland and coastal coverage Broadband Sounder technology displays underwater details with extreme clarity Supports Sirius satellite weather and radio; measures 8.8 x 6.4 x 3.5 inches (W x H x D)