Garmin BlueChart g2 - United States g2 microSD Card w/SD Adapter 010-C1018-20 allows you to see your surroundings more clearly. The United States BlueChart g2 from Garmin provides detailed coastal coverage of the entire US. This GPS map includes the East Coast from the Canadian border to Key West, FL, the Gulf of Mexico, Alaska, West Coast from Puget Sound to the Mexican Border, Hawaii, the Bahamas and more. BlueChart g2 data enables you to receive detailed marine cartography with a convenient viewing of nautical content. Get a precise view of vessels, anchorages, obstructions, waterways, restricted areas and more. The detailed mapping capabilities on this Garmin GPS accessory includes safety shading, fishing charts, smooth data transition between zoom levels, reduction of chart discontinuities and more. We are your leading online distributor for Garmin GPS devices and GPS accessories. We also sell a full and complete line of GPS devices, portable navigational systems and GPS maps that will suit your exploration needs. For more GPS on sale from Garmin and our other brands, please visit our GPS accessories page.