The Vortex Impact 4000 Ballistic Rail-Mounted Rangefinder is a powerful all-in-one solution for precision shooting. With multiple ranging modes-including LOS, HCD, and BAL-you'll get accurate line-of-sight, slope-compensated, and ballistic data for every shot. Built to withstand heavy recoil, it's easy to zero and holds its position reliably, even under tough conditions. The integrated GeoBallistics Solver, environmental sensors, and customizable profiles provide advanced wind and drop solutions directly on an easy-to-read display. Seamless connectivity to the GeoBallistics App and Bluetooth Remote lets you fine-tune settings and make real-time adjustments without leaving your shooting position. Includes: Bluetooth Remote Bluetooth Remote Mounting Kit Easy Zero Tool Kit SureFit Cover Lens Cloth Custom Tools CR123 Battery CR2032 Bluetooth Remote Battery