Easy to use GPS chart plotter features a large 5" 320x240 pixel screen. Full alphanumeric, backlit keypad with fast accessibility to main functions. Features a built-in worldwide basemap of coastlines and supports the new MapSend BlueNav marine charts on secure digital memory cards. Charts available for all regions of the world. 12-parallel channel WAAS and EGNOS enabled. Waterproof. Ships with external antenna .