Garmin microSD Chart Card. For the United States and Canadian West Coast. Provides industry-leading coverage, clarity and detail with coastal charts that feature integrated Garmin and Navionics data. Auto Guidance technology calculates a suggested route using desired depth and overhead clearance. Includes Depth Range Shading for up to 10 depth ranges. Features 10 contours that provide a more accurate depiction of the bottom structure for improved fishing charts and navigation. NOAA raster cartography is available as a free downloadable feature via the ActiveCaptain app.