With long eye relief, a fast-focus eyepiece, fully multi-coated lenses and resettable MOA turrets, there's no compromising on the Crossfire II. Clear, tough and bright, this riflescope hands other value-priced riflescopes their hat. The hard anodized single-piece aircraft-grade aluminum tube is nitrogen purged and o-ring sealed for waterproof/fogproof performance. Magnification: 2-7 x Objective Lens Diameter: 32 mm Eye Relief: 3.9 inches Field of View: 42-12.6 feet/ 100 yards Tube size: 1 inch Turret Style: Capped Adjustment Graduation: 1/4 MOA Travel per rotation: 15 MOA Max Elevation Adjustment: 60 MOA Max Windage Adjustment: 60 MOA Parallax Setting: 100 Yards