TomTom GO 3.5-Inch Portable GPS Navigator Portable vehicle GPS navigation system with 1GB Secure Digital memory card 32 MB of internal memory; includes preloaded U.S. maps Crystal-clear 3D or 2D navigation views with day/night variations 3-1/2-inch color TFT LCD screen with touchscreen operation Crisp audio turn-by-turn directions; works straight out of the box