Extreme terrain and unimaginable conditions test your mettle and your optics. Razor HD binoculars are a step up and out from other binoculars in their class. Lightweight, bright and strong, these binoculars feature a best-in-class HD optical system that delivers the sharpest images possible. Product Features APO System: Index-matched lenses correct color across the entire visual spectrum. HD Lens Elements: Premium extra-low dispersion glass delivers the ultimate in resolution and color fidelity, resulting in high-definition images. XR Plus Fully Multi-Coated: Ultimate anti-reflective coatings on all air-to-glass surfaces provide maximum light transmission for peak clarity and the pinnacle of low-light performance. Dielectric Prism Coatings: Multi-layer prism coatings provide bright, clear, color-accurate images. Plasma Tech: Cutting edge coating application process provides unparalleled coating durability and performance. Phase Correction: Coating on roof prism models enhances resolution and contrast. Roof Prism: Valued for greater durability and a more compact size. True Open Hinge: Offers superior ergonomics while decreasing total weight and bulk. Magnesium Chassis: Decreases weight and increases strength. Waterproof: O-ring seals prevent moisture, dust and debris from penetrating the binocular for reliable performance in all environments. Fogproof: Argon gas purging prevents internal fogging over a wide range of temperatures. ArmorTek: Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt. Rubber Armor: Provides a secure, non-slip grip, and durable external protection. 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. Diopter: Adjusts for differences in a users eyes. Located on right eyepiece. Tripod Adaptable: Compatible with a tripod adapter, allowing use on a tripod or car window mount. Product Specifications Magnification: 8x Objective Lens Diameter: 42 mm Eye Relief: 17.5 mm Exit Pupil: 5.25 mm Linear Field of View: 388 feet/1000 yards Angular Field of View: 7.4 degrees Close Focus: 6 feet Interpupillary Distance: 55-75 mm Height: 5.9 inches Width: 5.1 inches Weight: 24.2 ounces