DeLorme Earthmate GPS Receiver Faster satellite acquisition times and outstanding performance Arrow shows your position in real time on street-level maps Durable housing with a moisture-resistant seal, designed to withstand a wide variety of road conditions Pick any 2 points on the map and have Street Atlas USA create an address-to-address route Use Earthmate with Topo USA, Topo USA 2.0, 3-DC TopoQuads, Eartha Global Explorer, or AAA Map'n'Go