With the Garmin nuMaps Lifetime North America map update card you can navigate with the confidence of knowing you have the most up-to-date map information on your Garmin GPS. One-time nuMaps purchase lets you download map updates for the lifetime of your Garmin GPS device. Keep the most current streets, highways and points of interest in your GPS for a rich, accurate navigation experience. Garmin nuMaps lifetime subscription allows you to download new data up to 4 times per year with no monthly fees or maintenance costs. Updates are compatible with City Navigator street maps.