In addition to all the features of the 62S, this model boasts pre-loaded detailed topo maps of the U.S. The ruggedly built workhorse of a GPS packs a wealth of Garmin's best features, including 3-D mapping capabilities, wireless connectivity and high-speed USB interface. The bright 2.6" sunlight-readable TFT color display has a 160x240-pixel resolution for graphics that pop and are easy to see in direct sunlight. Pre-loaded worldwide basemap with shaded relief supports Garmin custom maps. High-sensitivity receiver with HotFix™ speeds up satellite acquisition times. Wirelessly share routes, tracks, waypoints and geocaches between compatible units. Three-axis compass provides accurate headings without being held level. Barometric altimeter tracks changes in pressure to pinpoint your precise altitude and monitor weather conditions. Load optional mapping using the micro SD card slot. High-speed USB and serial interface. Waterproof design. Powered by two AA batteries (not included) for up to 20 hours.