Turn your laptop PC or netbook into a powerful GPS navigator, with voice-guided navigation, automatic backon- track, GPS Radar to locate travel services, and a new E-Z Nav wizard for effortless on-the-go routing. The LT-40 includes a high-sensitivity chipset for fast satellite acquisition, and DeLorme ConstantLock[[ technology delivers surefire signal retention even in challenging GPS environments. Enjoy superior GPS tracking with NavMode, including optional 3-D perspective and large, easily accessible user controls. Use E-Z Nav to locate and route to nearby hotels, restaurants, attractions, sports venues, and businesses of all types most with phone numbers included. Create routes automatically with user controls to ensure you take the roads you prefer. Calculate fuel usage and costs, and GPS-navigate with total confidence anywhere in the U.S. or Canada, and on major roads in Mexico. Add U.S. aerial imagery, and see your landmarks as you navigate.