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From freshwater lakes to back country trails, Colorado 400i Portable Navigator is your guide to the wet and wild. With preloaded U.S. Inland lakes, this rugged, advanced handheld is ready for adventure. Packed with features, it includes a high-sensitivity receiver, barometric altimeter, electronic compass, SD card slot, color display, picture viewer and more. Even exchange tracks, waypoints, routes and geocaches wirelessly between similar units.