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Detailed Specifications: Type: Porro-prism center focusing (inner hinge). Lens Construction: Objective Lens: 2 elements in 1 group Eyepiece Lens: 3 elements in 2 groups Magnification: 8X Objective Lens Diameter: 40mm Real Field of View: 6.3 degrees Apparent Field of View: 50 degrees Field of View at 1000m: 110m Field of View at 1000 yd.: 330 ft. Exit Pupil: 5.0mm Eye Relief: 20mm Relative Brightness: 25 Diopter Adjustment Range: +4 Diopter Eye Distance Adjustment Range: 2.2 inches - 2.8 inches (57mm - 72mm) Focusing Range: 11.5 feet to infinity (3.5m to infinity) Eyepiece Ring: Slide type Body Color: Black Waterproof: 1m depth of water (JIS Class 6), nitrogen filled Height & Width: 5.3 inches x 6.9 inches (134mm x 175mm) Thickness: 3.0 inches (75mm) Accessories: Objective lens cap, rain guard cap (eyepiece lens cap), case, neck strap
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