With its large objective lens and huge 8-32x magnification, the Optima E-SFT will have no trouble sighting your target over varied distances. Each features an illuminated mil-dot reticle with 11 different brightness setting for shooting in all-weather conditions. This ability is further enhanced by its rugged 30mm tube that is waterproof, shockproof, and fog resistant. Each scope includes 11mm Dovetail rings that are premounted so you can get sighted right away. 30mm Tube Magnification: 8-32x Objective Diameter: 50mm Exit Pupil (mm) 1.56 - 6.56 Overall Length:16.7 inches Eye Relief (inches): 3.35 - 3.54 Field of View (Ft. at 100 yards) 3.5 - 11.5 Integrated sunshade reduces glare Side-focus parallax setting for quick, precise adjustments Fully multi-coated optics for clear, bright images Illuminated mil-dot reticle with 11-position variable brightness settings 1/8 MOA click adjustments Large turrets are easy to manipulate, even when wearing gloves Dry nitrogen filled Water, fog, and shock resistant 11mm dovetail mounts included