The Global Positioning System (GPS) is a satellite-based navigation system made up of at least 24 satellites. GPS works in any weather conditions, anywhere in the world, 24 hours a day, with no subscription fees or setup charges.
Fortunately, keeping your GPS unit updated is easy,
especially with Garmin's Express software, which essentially reduces it to
plugging the device into your computer and letting the software work its magic.
You can use Express whether you've got a Drive, DriveAssist, Zumo, Nuvi, or any
other model in Garmin's lineup.