Vortex Diamondback HD Binoculars 8x28 The Diamondback® HD smashes the scale of price vs performance, delivering a rock-solid optic that optically punches high above its class. 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 Lenses Anti-reflective coatings on all air-to-glass surfaces provide increased light transmission for greater clarity and low-light performance. Dielectric Prism Coatings Multi-layer prism coatings provide bright, clear, color-accurate images. Phase Correction Coating on roof prism enhances resolution and contrast. 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. Argon Gas Purged Gas purged and O-ring sealed for superior fogproof and waterproof performance in the most extreme conditions. Waterproof O-ring seals prevent moisture, dust and debris from penetrating the binocular for reliable performance in all environments. Fogproof Designed to withstand a wide range of temperatures. Shockproof Rugged construction withstands recoil and impact. Tripod Adaptable Allowing use on a tripod or car window mount. Tripod adapter may be required. Specifications Magnification 8x Objective Lens Diameter 28 mm Linear Field of View 332' @ 1000 yds Angular Field of View 6.2º Eye Relief 18.0mm Height 4.6" Width 4.5" Weight 13.7 oz. Interpupillary Distance 55mm - 72mm Close Focus 6.0'
