STYRKA S7 Series Riflescopes feature STYRKA's proprietary SXL-MAX multi-coating for increased light transmission throughout the entire optical system and across the entire visible spectrum. SLX-MAX also enhances contrast and resolution for sharper, more detailed images with natural color. STYRKA S7 riflescopes are constructed of one-piece, 30mm aircraft-grade aluminum for long-lasting durability. Provides you with more magnification than a standard 3-9x and the ability to adjust for parallax. Magnification: 3-12x Objective Lens Diameter: 42mm Lens Coatings: Fully Multi-Coated – STYRKA SXL-MAX Coating Angular Field of View: 6.6°-1.6° Linear Field of View: 34.6-8.4ft@100yds, 11.5-2.8m@100m Tube Diameter: 30mm Reticle: Plex Eye Relief: 3.9”, 99mm Exit Pupil: 12.7-3.5mm Adjustment Gradation: 1/4 MOA Elevation ADJ Range: 60 MOA Windage ADJ Range: 60 MOA Zero Reset: Yes Parallax Setting: 10 yds to infinity Waterproof: Waterproof (IPX7) and Nitrogen Purged Relative Brightness: 161.3-12.2 Twilight Factor: 11.2-22.4 Weight: 21.4 oz Size (LxWxH): 12.94x2.6x2.2