The VX-5HD maximizes as much exit pupil light as your eye can handle. From the mountains, to the open plains, to range day, this scope has the ability to dominate them all. Leupold's Guard-ion lens coating shed water and dirt, keeping your target clear, while the Twilight Max HD light management system delivers the maximum amount of usable light to your eye for unmatched low-light performance and clarity. With the two-turn CDS ZeroLock 2 adjustment (Leupold's one-of-kind Custom Dial System), you'll have the confidence to take long-range shots without worrying about holdovers.