Designed to handle the recoil of your toughest magnum these scopes offer fully multi-coated optics for an exceptionally bright view. These 3-12x models have 1/8 MOA windage and elevation adjustments. Waterproof fogproof and shockproof. Covered by the Burris Forever Warranty. - Tube Diameter: 1 - Objective Bell Diameter: 44mm - Ocular Bell Diameter: 38mm - Adjustment Click Value: 1/8 moa - Eye Relief: 9 - 22 - Exit Pupil Diameter: 9.1 - 2.8mm - Field of View at 100 Yards: 14@3x - 4@12x