Features:_(1) Xtended Twilight Lens System™, optimizing the transmission of low-light wavelengths, so you see the details of low-light scenes in greater, brighter detail than with any other riflescope available. (2) DiamondCoat 2™ lens coatings on exterior lens surfaces provide the highest level of scratch resistance Leupold has ever offered. Blackened lens edges reduce light diffusion, so more usable light reaches the shooter’s eye, for a brighter image with increased contrast. (3) Finger-adjustable, cryogenically treated, ¼-MOA click windage and elevation adjustments with resettable pointer dials marking the zero point. Tactile power indicator also features built-in range estimation functions and graphite O-rings for easy operation. (4) Internally threaded, lockable, extreme fast-focus eyepiece with Alumina rubber eyepiece guard. (5) Absolute waterproof integrity using Leupold's proprietary Argon/Krypton gas blend.