Compare Cobra Electronics 100 - 2.4 in. Handheld GPS Receiver to Cobra Electronics GPSM 4000 - 5 in. Car GPS Receiver

The ultimate in GPS spy and surveillance equipment. This GPS vehicle tracking system allows you to monitor where a car or vehicle has been, the speed that it traveled, and start and stop times. All of this information is tracked right down to useable street level detail. These units are perfect for monitoring the activity of personal vehicles, company cars and fleet vehicles.\nThe Global Positioning System (GPS) is a worldwide radio-navigation system formed of 24 orbiting satellites and their ground stations. Launched and maintained by the U.S. Department of Defense, these satellites send a stream of signals to the earth's surface enabling a GPS receiver to calculate accurate positions within about 10 feet or less. Less

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. Less