Navigate your way through city streets and rural roads with the Cobra Nav One 4000 GPS navigation system. Equipped with Cobra's exclusive iASAP satellite acquisition technology, which receives uninterrupted, quick satellite signals even among urban canyons and dense foliage, the device is a must for the driver who doesn't want to mess with paper maps or printed MapQuest directions. The Nav One 4000 works simply: just enter the target address or point of interest, and the unit automatically determines the best route and offers turn-by-turn directions with clear voice guidance. The built-in street-level map of the U.S. and Canada offers full, detailed coverage of potential routes, along with more than six million points of interest from which to choose, including banks, hotels, restaurants, entertainment options, gas stations, and more. And should the driver stray off course or take a detour, the Nav One 4000 automatically recalculates the route and provides fresh directions. Perhaps the Nav One 4000's most unique feature, however, is its compatibility with Cobra's optional traffic receiver and antenna (sold separately), which offer real-time traffic updates to commuters and travelers. The matchbook-sized receiver receives up-to-the-minute information on traffic accidents, congested roads, and construction zones in 48 major metropolitan areas across the U.S. As the unit processes the info--which it picks up from an FM radio feed via Tele Atlas N.V. and Clear Channel's Total Traffic Network--it automatically determines alternate routes, letting the driver detour around the worst snarls and enjoy a stress-free commute. It's the perfect unit for frustrated commuters and other folks who spend much of their day in the car.