Triton 500Advanced full-color navigation that's amazingly easy! 3-axis electronic compass and built-in barometer offer enhanced navigation capabilities. SD-card compatibility enables use of unlimited optional detailed maps and other user generated content. Rugged and waterproof to take you anywhereAmazing ease-of-use - Reinventing handheld GPS simple menus instant access buttons intuitive scroll pad and crystal clear graphics let you navigate without the need for a Ph.D.3-axis electronic compass - Clearly see your direction no matter how you hold your GPS even when standing stillBarometer - Sensitive barometric pressure readings offer advance notice of changing weather and assists in providing accurate elevationFull-color 2.2 display - The large display shows maps simple menus navigation screens and other data in brilliant colorSD-card compatibility - An invaluable feature enables you to use an unlimited amount of map data for topographic marine and vehicle navigation. Store tracks routes geocaches and moreAdd detailed maps - Upload optional marine cartography topographic maps and more including the highly-detailed and feature-packed National Geographic Mapsto the available memory or SD cardBuilt-in maps - Basemap of the 48 contiguous United States Alaska and Canada (major highways city centers parks lakes and more) plus worldwide geographic boundariesPoints of interest - Preprogrammed points of interest include parks city centers airports historical monuments and more3-meter accuracy - SiRFstar III chipset and integrated multidirectional antennae offer superior GPS accuracy using the Wide Area Augmentation System Product : MAGELLAN TRITON 500 Manufacturer : MAGELLAN SYSTEM Manufacturer Part No : 980-0003-001 UPC : 763357117776