The professional grade Traffic Advisor™ is the state of the art in advanced handheld radar technology. It is the world’s smallest certified accurate speed radar. Designed for traffic professionals, engineers and many more applications, it has been independently tested and certified by the police radar test lab to be accurate to within +/- 1 mph (+/- 2 kph). Instrument grade quality and design in the palm of your hand, the Traffic Advisor™ has a ½ mile range on a car and measures from 7 mph to 325 mph. Includes calibrated tuning fork, tuning fork certificate of accuracy, test lab certificate of accuracy, factory certificate of accuracy, soft-shell belt holster case, 2 AAA alkaline batteries, manual and 2 year warranty.