Get the best view of your underwater fishing territory with the Humminbird HELIX system. Packed with features to get you started right, with minimal setup or extra-add-ons. Loaded with mapping info, plus the capability to create your own as you explore. Soft key controls allow dependable operation in inhospitable conditions CHIRP Down Imaging: Filters out noise and clutter for a clearer view to the sides and below your craft Dual Spectrum CHIRP sonar displays detailed fish arches as well as fish-holding structures and bottom. Provides both wide and narrow mode, allowing you to start big before narrowing down your search to the smallest details Internal GPS and Humminbird Basemap helps identify buoys, day markers, hazards, marinas, contours, depth markers and more. Includes charts of more than 10,000 lakes, plus continental U.S. coastal coverage Premium Chart Compatible: add optional charts from LakeMaster and CoastMaster ranges of products, as well as Navionics charts AutoChart Live allows you to create real-time maps of fishing spots, depth contours, bottom hardness and vegetation as you navigate. Records up to 8 hours of real time mapping, and compatible with AutoChart Zero Line SD card (micro SD slot) for extended recording time Includes control head, transom-mount transducer, power cable, gimbal mounting bracket and mounting hardware