The Jugs Pro-Sports Radar Gun comes with Digital Signal Processing (DSP) state-of-the-art technology and is fully guaranteed for an industry-best two years. Guaranteed to have an accuracy index of ±0.5 mph. Measures both MPH and KPH. Speed Range: 5-140 mph (8-224 kph). Greater distance range—up to 300 ft. Operates in two user-friendly modes.