This sleek chartplotter offers big capability i n a small package. The GPSMAP 440 features an ultra-bright 4" QVGA display and a built-in, satellite-enhanced worldwide basemap. Add even more mapping capabilit ies with the optional BlueChart? g2 Vision card. The GPSMAP 440 also includes full North American B luechart coverage. See detail-rich imagery like never before The worldwide basemap on the 440 can be enhanced w ith the optional BlueChart? g2 Vision card, which provides high-resolution aerial reference photos for help navigating tricky harbors and channels - or locati ng spots like area marinas, fuel stops or restaurants. The g2 Vision plug-in data card also allows the GP SMAP 440 to graphically depict a true 3D "mariner's eye" topside view or "fish ey e" underwater navigation perspective. Experience super simple user interface for easy op eration With fewer buttons to push and fewer operational s teps to navigate, the simplified menu format on the 440 makes it easy fo r you to see and select the data you want to access on-screen. Simplify navigation with Auto Guidance Optional g2 Vision auto guidance technology will h elp simplify your navigation. It's like having a knowledgeable guide to local ha zards and waterways always on deck. Auto Guidance searches all the chart feature s to suggest the best known charted route for navigation. Enjoy added functionality of sonar and XM Weather< br> The 440s version comes with powerful dual frequenc y or dual beam sonar to clearly paint depth contours, fish targets, struct ure, etc. It's also CANet? capable, allowing sounder data to be shared with o ther plotter displays on your boat. XM Weather versions+ of the 440 and 440s also are available. The 440x and 440sx are capable of displaying comprehensive graphical weather data. XM WX Satellite Weather delivers location-specific, animated, high -resolution weather data, in chart-overlay form, directly to your plotter.