The Garmin nuvi 3550LM GPS offers advanced mapping capabilities in a thin, five-inch, high-resolution touchscreen navigator. Garmin Guidance 3.0 allows you to quickly look up addresses and services and be guided to your destination with voice-prompted, turn-by-turn directions that speak street names. This Garmin GPS unit comes preloaded with maps that feature 3D landmarks and terrain for North America. It also comes preloaded with more than 8 million points of interest (POIs) and offers the option of adding your own. With free lifetime map updates, you always have the most up-to-date maps, POIs and navigation information available at your fingertips. Map updates are available for download up to four times a year with no subscription or update fees and no expiration dates.