The Lowrance High Definition System (HDS) combines a brighter, multi-touch display and enhanced processor with leading-edge fishfinder technologies - including CHIRP sonar, Broadband sounder, StructureScan HD, DownScan imaging and Trackback view - plus the latest advances in navigation and user interface - including internal 10Hz GPS, dual micro SD-card slots, touch-plus-keypad operation and built-in wireless connectivity - all in one easy-to-use display.