Take the DeLorme Earthmate PN-20 GPS with you when you road trip, hike off-trail, geocache, sail around the bay, or tour a new city. The WAAS-enabled DeLorme Earthmate comes loaded with US highway maps and a basic world map, plus you get Topo USA 7.0, a DVD that includes US street and topographic maps. USGS 7.5-minute quads, aerial and satellite imagery maps, and nautical charts are available for purchase and download from DeLorme as well. Hook your GPS up to your computer Windows Vista, XP, or 2000 OS-compatible using the included USB cable and transfer maps and trip data back and forth. This GPS tracks for you and includes tide charts, search capabilities such as finding an address, and sunrise/sunset and moon phase info.