DeLorme AE-008372-201 Earthmate PN-60w with Topo North America and Map Pack Supports satellite communication when paired with the DeLorme in Reach WAAS-enabled accuracy (to within 3 meters). Waterproof. Military standard 810F for vibration and shock GPX support for waypoint, track and geocache file management Supports up to 32GB SD cards;2.2 TFT LCD Downloadable maps including USGS Quads, 1:50K Canada topographic maps, NOAA Charts