Garmin MAP01103300 City Navigator North America NT 2008 for Macintosh Premium maps contain full coverage throughout the U.S., Canada and Puerto Rico including metropolitan and rural areas Detailed maps containing highways, interstates, business and residential roads with attributes such as turn restrictions, roundabout guidance, speed categories and other navigation features Displays nearly 6 million points of interest Enhances pronunciation data for compatible GPS devices that can speak street names (example - Turn right on Main St. ) Your GPS device must be able to speak street names to use this data