Insignia NS-NAV01 4.3" Touchscreen Portable GPS Navigation System w/USA Maps & Text to Speech WAAS-enabled GPS system that features preloaded maps of the United States and 2 million points of interest. Preloaded base maps of the United States Up to 2 million points of interest Backlit 4.3" color LCD touch screen Easily navigate settings and functions day or night on the large, bright display. WAAS(Wide Area Augmentation System)-enabled GPS receiver enhances performance in heavy cloud cover, wooded areas Automatic rerouting