Germany Optics System Leading to Crystal Clear Image,30mm Monotube, Return-to-Zero Turret,Etched Glass #4 Reticle MOA Adjust, Center Dot Illumination Magnification: 2-12x Objective Lens Dia.: 50mm Ocular Lens Dia.: 42mm (1.7 inch) Ocular Lens Length: 54mm (2.1 inch) Exit Pupil: 9.5-4.2mm Optics Coating: Fully-multi coat diamond clear Field of View: 63-10.5 feet @ 100 yards Field of View: 21-3.5 meters @ 100 meters Eye Relief: 100mm (4.0 inch) Length: 335mm (13.1 inch) Weight: 605g (21.4 ounce) Tube Dia.: 30mm Monotube Click Value: 1/4 MOA Elevation Range: 140MOA Windage Range: 140MOA Parallax Setting: 100 yards Reticle: Etched glass germany #4 Illumination: Six gear Battery: CR2032 Distance between objective lens part and middle turret: 42mm (1.6 inch) Length of middle turret part: 33mm (1.3 inch) Distance between middle turret part to power ring: 56mm (2.2 inch) Shock tested to 750g, water proof at 300 meters and 54 degree Fully nitrogen purged to eliminate any fogging of the lenses internally Adjust plate is NOT fixed, after zero the scope pull up the turret and re-set to zero High quality 6061 T6 aircraft grade aluminum Turret lock feature: press down to lock without click movement Diopter compensation from fast-focus eyepiece (+2 to -3) Including items: 30mm picatinny high ring (default) or weaver or dovetail mount, lens caps and cleaning cloth etc.