If you're a devoted mariner or serious outdoorenthusiast, our new GPSMAP 76Sis the GPS/mapping unit for you. The "S" in the product name stands for"sensors", because the GPSMAP 76Sincorporates a GPS receiver, barometricaltimeter, and an electronic compass that deliverprecise location, elevation,and bearing information to take adventurers ashigh or as far as they want togo. The unit also contains a basemap of North andSouth America, including majorhighways, thoroughfares, rivers, lakes, andborders, with plenty of memory (24MB) for downloading MapSource data. It's alsowaterproof and floats in water-and its larger screen, increased readability, bigger buttons, and rugged designmake this unit at home in even the harshestconditions.