The most technologically advanced spotting scope developed by the innovators at Vanguard. Extra-low dispersion glass ensures each scope produces accurate color rendition and virtually eliminates color fringing. The BaK-4 roof-prism lenses are fully multicoated to maximize light transmission. The eyepiece zooms from 15-45X on the 65mm models and 20-60X on the 82mm. All models are built on a rugged rubber-armored magnesium body and are fully submersible, nitrogen filled and fogproof. An extendable rubber-covered eyepiece makes them easy to use even when wearing eyeglasses. Plus, all Vanguard Endeavor spotting scopes have impressive eye relief, even at the highest zoom settings. A built-in sunshade eliminates glare in direct sunlight. Fine and coarse focusing wheels make precision focus quick and easy. Each spotting scope either mounts directly to Vanguard tripod heads or is equipped with a universal mounting plate. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Spotting Scopes.