A riflescope proves its worth when it performs in the field. STYRKA S5 Series Riflescopes are designed for in-the-field performance and to provide bright, high-contrast images with outstanding clarity and resolution. And, they're constructed of one-piece, 1-inch aircraft-grade aluminum for structural integrity and durability. For those who want high magnification, additional light gathering and the ability to adjust for parallax (standard). Magnification: 4.5-14x Objective Lens Diameter: 44mm Lens Coatings: Fully Multi-Coated – STYRKA SXL Coating Angular Field of View: 4.46°-1.43° Linear Field of View: 23.4-7.5ft@100yds Tube Diameter: 1" Reticle: Plex Illuminated Reticle: No Eye Relief: 3.46” Exit Pupil: 9.2-3.1mm Adjustment Gradation: 1/4 MOA Elevation ADJ Range: 50 MOA Windage ADJ Range: 50 MOA Zero Reset: Yes Parallax Setting: 20 yds to infinity Waterproof: Waterproof (IPX7) and Nitrogen Purged Relative Brightness: 84.6-9.6 Twilight Factor: 14.1-24.8 Weight: 19.2 oz Size (LxWxH): 13.44x2.31x2.19