DESC: This preloaded, offshore chartplotter combines the power of networking with brilliant color and slim-line design. The GPSMAP 4212 has preloaded BlueChart® g2 maps of the U.S. coast and displays them on a whopping 12.1” XGA display with crisp, video-quality resolution. By connecting to the Garmin Marine Network, you can add sonar, radar and weather. For even more enhanced features, you can add the optional Bluechart g2 Vision card.