ARKEN OPTICS products are designed to combine quality, performance, and precision with tremendous value. The SH-4GII is a FFP (First Focal Plane) optic that features the AZS System (ARKEN ZERO Stop). The SH-4GII incorporates adjustable elevation and windage turrets with tactile and audible clicks. These turrets offer 8 mils/20 moa per revolution.Brand ArkenCategory Rifle ScopesModel SH-4Magnification 4-16xTube Diameter 34mmColor Matte BlackReticle Illuminated Red VPR MOAField of View 30-7.5 ft @ 100 ydsFocal Plane FirstObjective 50mmEye Relief 3.60"Battery Size CR2032Length 13.40"Parallax Adjustment Side Parallax Adj. 25yds-InfinityHeight 3.45Weight 35.60 oz