Infrared sensor self-calibration technology allows for customizable weight and values, supports data playback, and automatic shutdown. Designed specifically for testing the firing rate, muzzle velocity, , and predicted range of high-powered air . Compact in size yet equipped with a 25mm extra-large diameter aluminum , even capable of testing velocity. High-definition backlit LCD screen ensures easy and accurate data reading even at night, with a testing error of less than 1.3%. Simple operation with only three buttons. Includes one tripod., Weight: 0.57761112644 Pounds, Manufacturer: Gishbjka