Vortex Diamondback HD 8x28 Roof Prism Binoculars are impressive pocket-sized binoculars with High Density extra-low dispersion glass that delivers excellent resolution and colours fidelity, resulting in high definition images. Made with a roof prism, the Diamondback HD 8x28, which comes with Vortex's Unlimited Lifetime Warranty, is a compact optic, perfect for keeping close at hand when stalking, hunting or at home watching the local wildlife. These versatile binoculars feature multi-position eyecups that can twist up or down for immediate, precise settings for comfortable viewing with or without glasses. The outer skin - rubber armour - provides secure and durable, non-slip external protection. Its outer lenses are protected by ArmourTek, an exceptionally hard, scratch-resistant coating that repels dirt, oil and the corrosive salt found in fingerprints. Waterproof O-ring seals prevent moisture, dust and debris from penetrating the binocular for reliable performance in all environments. These precisely-made, robust binoculars by Vortex include a rainguard eyepeice cover, tethered objective lens covers, comfortable neck strap and a sturdy deluxe carry case with snap buckle closure. Made with premium High Density extra-low dispersion glass for outstanding resolution and colour Lifetime Vortex guarantee ArmourTek coated lenses to help protect against oil, scratches, dirt and fingerprint salts Fully multi-coated lenses for increased light transmission Multiple anti-reflective coatings on all air-to-glass surfaces Multi-layer prism coatings that provide bright, clear, colour-accurate images Constructed with a roof prism for greater durability and a more compact size Comes with robust carry case, comfortable neck strap, tethered objective lens covers and rainguard eyepiece cover Multi-positional eyecups for precise comfortable viewing Right eye diopter to adjust to different eye distances Magnification: 8x Objective Lens Diameter: 28mm Eye relief: 18mm Exit Pupil: 3.5mm Angular field of view: 6.2 degrees Close focus: 1.83m / 6ft Interpupillary distance: 55-72mm Height: 117mm / 4.6 inches Width: 114mm / 4.5 inches Weight: 390g / 13.7 ounces