The Vortex Optics Impact 4000 GB Ballistic Picatinny Rail Mounted Laser Rangefinder allows you to shoot farther, faster, and more precise. For long-range competitors and open-country hunters, the Impact 4000 is the all-in-one range and ballistic problem solver that delivers point-and-shoot solutions without coming off the gun. This advanced, rail-mounted laser rangefinder provides you with range, ballistic, and weather data via the integrated GeoBallistics solver, on-board Environmental Sensors, and patented Wind Bearing Capture Mode. Intuitive to use. Rugged and reliable. It solidly mounts to any picatinny-style rail or rings with a diving board mount. Best of all, it functions in places your smartphone can't for deadly speed and precision no matter where you are. IncludedBluetooth RemoteBluetooth Remote Mounting KitEasy Zero Tool KitSureFit CoverLens ClothCustom ToolsCR123 BatteryCR2032 Bluetooth Remote Battery FeaturesCONVENIENT WIND/DROP SOLUTIONS- Easy to read display of ...