Labradar LX The Labradar LX is the latest generation of Doppler Radar Chronographs. Brought to you by Infinition, the original inventors of the personal Doppler Radar Chronographs. Labradar is used by more ELR shooters than any other chronograph. Features including: Tough Metal Case Extreme Accuracy of +/- 0.1% Use for Rifles, Pistol, Archery, Air Guns, Paintball, Shotgun Slugs Long Lasting Internal Rechargeable Battery Velocity Range of 65 to 5,000 fps. Bright LCD Screen for outdoor viewing Built in IPSC / IDPA Power Factor and Ke Calculator Displays Average, ES, SD, Min, Max Velocity Compact size: 2.5" X 2.75" X Mfg: Labradar