Product Info for Vortex Viper HD 10x50 Roof Prism Binocular Get clear, unobstructed views using this Vortex Viper HD 10x50 Roof Prism Binocular. These Binoculars by Vortex feature HD lens elements and XR fully multi-coated lenses for bright sight pictures that offer impressive resolution and color fidelity. Each Vortex Viper HD 10x50mm Phase Corrected Binocular also has ArmorTek coatings on the lenses which protects them from scratches, dirt and oil. The non-slip rubber armor grip can be grasped even in rainy conditions while offering ample protection for the precious internal components. Pick up a Vortex Viper HD 10x50 Waterproof Binocular to observe the world around you in clarity and comfort. Specifications for Vortex Viper HD 10x50 Roof Prism Binocular: Color: Green Magnification: 10 x Objective Lens Diameter: 50 mm Prism System: Roof Eye Relief: 16 mm Exit Pupil: 5 mm Field of View, Linear: 346 ft at 1000 yds Field of View, Angle: 6.6 degrees Optical Coating: Fully Multi-Coated Binoculars Focus System: Center Focus Twilight Factor: 22.4 Interpupillary Distance: 56 - 75 mm Close Focus: 9.5 ft Water Resistance Level: Waterproof Length: 9.5 in Weight: 28.4 lb Finish: Matte Package Type: Box Included Accessories: Rainguard eyepiece cover, tethered objective lens covers, comfort neck strap, GlassPak bino harness Magnification Type: Fixed Objective Lens Type: Fully Multi-Coated Height: 6.5 in Eyepiece Lens Material: Glass Objective Lens Material: Glass Minimum Focus Distance: 9.5 ft Armoring: Rubber Armored Features of Vortex Viper HD 10x50 Roof Prism Binocular: HD Lens Elements XR Fully Multi-Coated Dielectric Coating Phase Correction Roof Prism Waterproof/Fogproof ArmorTek Rubber Armor Adjustable Eyecups Center Focus Wheel Diopter Tripod Adaptable