The new design also allows drop-in replacement for competitive in-dash models. Along with built-in Contour - XD mapping system maximize your angling experience with the Humminbird 1198c SI HD. 1198c SI HD Features Color GPS Fishing System 10.4 Full-Color TFT Display 50 Channel GPS WASS Receiver Pre-Loaded Contour - XD Maps More Details Transducer Included Switch - Fire Sonar More Details HD Down Imaging Sonar More Details HD Side Imaging Sonar More Details Wide 180 Coverage Dual Frequency - 455 k - Hz 2 86 @-10dB - 800 k - Hz 2 55 @-10dB Dual - Beam PLUS More Details Selectable Broad 60 Precision 20 Beams Dual Frequency - 200 k - Hz 20x @-10dB - 83 k - Hz 60x @-10dB Depth Capability - Side Imaging 150ft Down 240ft Each Side - Dual - Beam PLUS 1500ft - 3, 000ft With Optional 200 50 k - Hz Transducer For Deepwater Use Dual Integrated SD Card Slots Expandable Upgradeable Fully Waterproof