Feature First Focal Plane Spotting Scope w/ Ranging Reticle. 60mm Objective Lens. ED Glass, Extra-low Dispersion, Superior Clarity Resolution. Fully-multi Coated. IP67 Water Resistant. Heavy-duty Magnesium-alloy Die Casting. Rubber Armed to Protect against Crashes and Scratches. Specification Magnification: 12-40x Body Style: Magnesium-alloy die casting Objective Lens Dia.: 60mm / 2.36in Ocular Lens Dia.: 30mm / 1.18in Overall Length: 320mm / 13.38in Weight: 1659 g / 58.52 oz Field angle: 3.4Adeg~1.1Adeg Field of view: 17.7-5.7ft @ 100yds Field of view: 5.9-1.9m @ 100m Exit Pupil Dia.: 3.0-1.0mm Near Focus: 4m Eye-Relief: 30mm Relative Brightness: 23.04~2.25 Optical Material: All Lens and Prism are made of Optical Glass Coating: Fully Multi Coated Surface Treatment: Rubber and Paint Resolving Power: 4.6" Focusing System: Internal Focus Environmental: Fill nitrogen, waterproof and fogproof. Eyecups: Twist up Accessory: Softbag, strap, lens cleaning cloth, desiccant. Video Reticle Product Manual Click Here