3.8, WQVGA color, automotive-grade, TFT LCD touch screen display with automatic adjusting backlight.Pre-loaded MapSource City Navigator NT North America data.Text-to-speech turn-by-turn directions speaks POI names, names of streets, when to turn, and in what direction.Automatic route calculation/recalculation.3-D navigation perspective, or top-down track-up or north-up view.Custom road preference to priortize choice of roads and highways.Optional traffic delay notification allows drivers to see congested areas on color-coded map (GTM 10 FM TMC receiver required).Stores 500 waypoints with name and graphic symbol.WAAS-enabled positioning accuracy up to 3m.5 5/8 W x 3 3/16 H x 2 D.Includes rechargeable Li-Ion battery, remote, PC/USB interface cable, AC power adapter, protective cover, beanbag and dash mounts, and 12V power cable with external speaker