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This chartplotter provides the brightest, sharpest, most colorful graphics you've ever seen on a 5-inch screen. See clearly as you navigate with the 525's crisp, sunlight-readable VGA display driven by a high-speed processor. This chartplotter offers exceptional detail, fast redraw rates, and the most realistic photo-enhanced cartography ever seen in this class of fixed-mount electronics.The 525's worldwide basemap can be enhanced with the optional BlueChart g2 Vision card, which provides high-resolution aerial reference photos for help navigating tricky harbors and channels - or locating spots like area marinas, fuel stops or restaurants. The g2 Vision plug-in SD data card also allows the GPSMAP 525 to graphically depict a true 3D "mariner's eye" topside view or "fish eye" underwater navigation perspective.With fewer buttons to push and fewer operational steps to navigate, the GPSMAP 525's simplified menu format makes it easy for you to see and select the data you want to access on-screen.