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DIAMONDBACK 8X28 ROOF PRISM BINOCULAR With the compact 8x28 Diamondback, small size doesn't mean small performance! Like its namesake, the Diamondback rattlesnake, this pocket roof prism binocular packs a lot of wallop into a slender package. Featuring fully multi-coated optics, phase correction coatings, argon gas purging, and a unique checkered rubber armoring, the compact Diamondback doesn't trade performance for small size. OPTICAL FEATURES Fully Multi-Coated Lenses Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Phase Correction Used on roof prism models only—coating enhances resolution and contrast. CONSTRUCTION FEATURES Roof Prisms Valued for greater durability and a more compact size. Waterproof Optics are sealed with o-rings to prevent moisture, dust, and debris from getting inside the binocular. Fogproof Argon gas purging guarantees superior fogproof and waterproof performance. Rubber Armor Provides a secure, non-slip grip, and durable external protection. CONVENIENCE FEATURES Multi-Position Eyecups Twist up and down to precise, intermediate settings to maximize custom fit for comfortable viewing with or without eyeglasses. Center Focus Wheel Adjusts the focus of both binocular barrels at the same time. Right Eye Diopter Adjusts for differences in a user's eyes. Located on the right eyepiece. Tripod Adaptable Compatible with a tripod adapter, allowing use on a tripod or car window mount. Adapter sold separately. Magnification 8 x Objective Lens Diameter 28 mm Eye Relief 19.3 mm Exit Pupil 3.5 mm Linear Field of View 360 feet/1000 yards Angular Field Of View 6.9 degrees Close Focus 13.1 feet Interpupillary Distance 56-74 mm Height 4.8 inches Width 4.5 inches Weight 14 ounces Product Manual (PDF) Download