Garmin Oregon 400T 3-Inch Touchscreen Handheld GPS Unit with Preloaded Topographic Maps Rugged, waterproof handheld GPS with 3-inch color touchscreen Preloaded U.S. topographic maps, 3-D map view and a built-in worldwide basemap with shaded relief Wireless exchange of user routes, tracks, waypoints, geocaches and images Features microSD slot for easily updating maps; supports GPX geocaching files Extras include barometric altimeter, electronic compass, picture viewer