This Gamo scope has fully coated optics, a generous 3" eye relief and a variety of power configurations making this a great scope for most hunting situations. Specifications: - Magnification: 4-12X - Objective Lens Diameter: 40 - Coating: Fully Coated - Standard Gamo 30/30 Reticle - Exit Pupil Range: 10.1-3.35 - Eye Relief: 3" - Field of View @ 100yds: 25-10.5 - Diopter Compensation: 2/ -2 - Twilight Factor: 12.64 - 21.90 - Max Elevation/Windage (ft/100 yds): 30 / 30 - Tube Diameter: 24.4 / 1 - Length, Approx. (mm) (in): 330 / 13