As always, the Razor 10x50s are a Vortex state of the art, full-sized roof prism binocular. Designed to provide greater brightness under more difficult field conditions, the larger objective lenses of the 10x50 Vortex Razor binoculars provide 42% more light-gathering capacity than a conventional 42-mm objective lens. The Razor 10x50s are designed with XD extra-low dispersion glass for truer color and sharper image quality and have the XR multi-coating for sharper resolution and brighter light enhancement. The silver-coated prisms of the Razor 10x50 binoculars are phase-corrected to enhance resolution even further. This beautiful instrument has a locking diopter mechanism in the focus knob and adjusting eyecups that can be instantly swapped out for flared eyecups that eliminate stray light from the side. With a stylish open hinge design on a rugged frame, the 10x50s are 7.5 inches tall by 5.8 inches wide and weigh under 37 oz. These Razors have a minimum close focus of 9.8 feet and a 329-foot field of view at 1000 yards. The Vortex Razor 10x50 binoculars are O-ring sealed to be fully waterproof and argon-purged to be internally fog-proof. These are top-of-the-line binoculars that will thrill you for years to come!