VUS027R G2 VISION HAWAIIAN microSD/SD card Premier Coastal Navigation Charts. Provides industry-leading coverage, clarity and detail with updated coastal charts that feature integrated Garmin and Navionics data. Auto Guidance technology uses your desired depth and overhead clearance to calculate routes and show a suggested path to follow. Depth Range Shading provides up to 10 depth ranges, enabling you to view your target depth at a glance. Up to 1 contours provide a more accurate depiction of the bottom structure for improved fishing charts and navigation in swamps, canals and marinas.