SONAR: CHIRP sonar delivers high-resolution views of individual fish targets, even when targets are close to the bottom or suspended in tight schools DownScan Imaging(TM) makes it easier to identify how fish relate to structure, providing photo-like images of rocks, trees, and other underwater structures directly beneath your boat SideScan helps search large areas for fish-holding structure. See up to 600ft either side of your vessel, helping you cover more water in a shorter period of time FISHREVEAL(TM) combines DownScan Imaging(TM) makes it easier to identify how fish relate to structure, providing photo-like images of rocks, trees, and other underwater structures directly beneath your boat Autotuning sonar provides the optimal settings from the start NAVIGATION: Features high-resolution C-MAP(R) Embedded inland charts for the US for coverage of over 17,000+ American lakes Create custom 1/2-foot contour maps of your local lake or uncharted water in real time ADDITIONAL DETAILS: Improved resolution, clarity and visibility, even with polarized sunglasses in direct sunlight Easy set up with Eagle's improved twist-locking connector, promising an easy installation and removal every time SD Card Slot One-year warranty guarantee