Product Features Preloaded base maps of the United States:2 million points of interest guide you toward interesting and useful destinations. Backlit 4.3" color touch screen:Easily view and modify settings and functions day or night. Text-to-speech and turn-by-turn voice prompts:Allow you to keep your eyes on the road while navigating with convenient voice guidance. Real-time Navteq traffic and AccuWeather weather updates:Avoid possible traffic jams and weather delays (3 months of service included). Built-in Bluetooth technology:Lets you make hands-free calls (mobile phone with Bluetooth capability required, not included). Avoid highways/tolls mode:Allows you to bypass congested roads for improved navigation. 3D map view capability makes navigation a snap. Built-in battery:With up to 2 hours of battery life. Automatic rerouting:Provides alternate travel directions in the event of a deviation from the directions given. Internet connectability:With Google local search capability provides Internet browser access and Web searches on the go. Real-time gas price and movie listing access:Allow you to find optimal gas prices for your location and plan your entertainment with ease. Twitter enabled:Allows you to send location updates to friends, family and colleagues from the road. 24-channel WAAS-enabled GPS receiver:Enhances performance in heavy cloud cover, wooded areas and canyons so you don't have to worry about losing the satellite link. WAAS is Wide Area Augmentation System. Built-in microSD media card slot:Provides expandable storage using optional microSD media cards (not included).