The DiamondbackA(R) HD smashes the scale of price vs performance, delivering a rock-solid optic that optically punches high above its class. The included GlassPakTM binocular harness keeps your glass close at hand, ready to deploy at a moment&';s notice, all while providing protection and significantly more comfort than traditional neck straps. Included in the Box GlassPak binocular case GlassPak case harness Comfort neck strap Tethered objective lens covers Rainguard Eyepiece Cover Lens Cloth Specifications: Magnification 8x Objective Lens Diameter 42 mm Eye Relief 17 mm Exit Pupil 5.25 mm Linear Field of View 393 feet/1000 yards Angular Field of View 7.5 degrees Close Focus 5 feet Interpupillary Distance 55-73 mm Height 5.7 inches Width 5.1 inches Weight 21.8 oz OPTICAL FEATURES HD Optical System Optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration and provide outstanding color fidelity, edge-to-edge sharpness and light transmission. Fully Multi-Coated Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Dielectric Coating Multi-layer prism coatings provide bright, clear, color-accurate images. ArmorTek A(R) Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt. Phase Correction Coating on roof prism models enhances resolution and contrast. CONSTRUCTION FEATURES Rubber Armor Provides a secure, non-slip grip, and durable external protection. Waterproof O-ring seals prevent moisture, dust and debris from penetrating the binocular for reliable performance in all environments. Shockproof Rugged construction withstands recoil and impact. Fogproof Argon gas purging prevents internal fogging over a wide range of temperatures. Roof Prism Valued for greater durability and a more compact size. Magnesium Chassis Decreases weight and increases strength. CONVENIENCE FEATURES Adjustable Eyecups Twist up and down 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 user&';s eyes. Located on right eyepiece. Tripod Adaptable Compatible with a tripod adapter, allowing use on a tripod or car window mount.