This Leupold FX-II Scout 2.5x28mm scope with Duplex reticle features multicoat 4, xtended twilight lens system, diamondcoat2, 2nd generation argon/krypton waterproofing, blackened lens edges, super fast-focus eyepiece, lockable fast-focus eyepiece, classic/standard lockable eyepiece, ballistic aiming system, standard multicoat, adjustable objective, proprietary nitrogen fill process, and 6061-T6 aircraft quality aluminum.