The receivers have been designed especially for use with Compaq iPaq Pocket PCs. The combination of these GPS receivers and the software allows travelers to navigate worldwide via land, air and water using an integrated device that eliminates wires. The software program also features free support of the Terra Server to import geocoded aerial and topographic maps. TeleType offers specialized add-on maps for marine and aviation. The products were specifically designed for Windows CE devices, but the receivers also work on Windows laptops. For more information on the WorldNavigator-Europe, visit www.teletype.com/gps/catalog.