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LabRadar Doppler Chronograph Lite is a highly accurate and user-friendly tool designed to provide precision data about handload velocity. Unlike traditional chronographs that use optical sensors, this device uses radar to measure the projectile velocity coming from rifles, pistols, shotguns, airgun pellets, and arrows. Additionally, the control unit sits next to the shooter, and the LabRadar unit points toward the target. The device can measure velocities up to 100 yards, and it can accurately record velocities up to 3,900 ft. per second with 0.1 percent accuracy for subsonic, transonic, or supersonic projectiles. It can record an almost infinite number of shots/strings, and all the data is downloadable to a PC. It comes with a 1/4"-20 tpi thread that mounts to any standard tripod. The device is powered by six AA batteries and can easily calculate shot series, highs, lows, averages, standard deviation, extreme spread, and IDPA power factors, just like the original EXCEPT that this model is not compatible with Bluetooth.