DeLorme Earthmate GPS LT-20 Street Atlas 2007 U.S.A./Canada Map DVD-ROM (Windows) Plug-and-play laptop GPS utilizes your existing large screen Completely updated map database, now with Canadian street-level maps GPS voice commands, spoken directions, automatic back on track The latest generation of laptop GPS solutions utilizing chipsets from ST Micro and SiG Updated maps and 4 million places of interest are produced by experienced mapmakers at DeLorme