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Keypad control: Master HELIX at the touch of a button. Access the pre-loaded views from the user-friendly menu system operated by softkey controls that allow you to reliably operate your fish finder in any conditions. – CHIRP Side Imaging: Filter out noise and clutter for a clearer view of the world below and out to each side of your boat. CHIRP Digital Sonar processing of Side Imaging sonar means that you’ll see fish and structure to the left and right of your boat so you can spend less time searching and more time catching. – CHIRP Down Imaging: Filter out noise and clutter for a clear view beneath your boat. CHIRP Digital Sonar processing of Down Imaging sonar means that you’ll see great detail to make finding the fish simple and easy. – Dual Spectrum CHIRP sonar: Before you cast know what’s down there thanks to highly-detailed fish arches and a clear view of fish-holding structure and the bottom. Powered by our proprietary Low-Q CHIRP transducer Dual Spectrum CHIRP 2D sonar offers two ways to search; Wide Mode for maximum coverage and Narrow Mode for focusing on the slightest detail. – Internal GPS and Humminbird Basemap: Our enhanced basemap provides you with a clear view of underwater terrain and surrounding points of interest so you can fish and navigate with total confidence. Identify buoys day markers hazards marinas contours depth markers and much much more. Includes charts of more than 10000 lakes plus coastal coverage for the continental U.S.Premium Chart Compatible: Humminbird provides the most complete offering of premium chart options to anglers everywhere. Get a complete view of the world below with optional charts from Humminbird’s Lake – Master and Coast – Master products as well as your choice of compatible Navionics charts.AutoChart Live: Create real-time maps of your fishing spots with access to patented Humminbird Lake – Master features. Map depth contours bottom hardness and vegetation as you drive your boat. Comes standard with eight 8 hours of built-in recording time and is compatible with Auto – Chart Zero Line SD cards for virtually-endless Auto – Chart Live mapping capacity.