The Vortex Razor HD 27-60x85mm Spotting Scope produces brilliant, high definition images thanks to its precision ground, hand selected lenses that are held to exacting standards. Fully multi-coated lenses used in the Vortex Razor HD 27-60x85mm Spotting Scope include an XR Plus anti-reflective coating for optimum viewing during low-light conditions. Fully rubber armored body Helical focus for fast and fine adjustments Argon gas purged for waterproof and fogproof performance Built-in sunshade A locking collar allows the Vortex Razor HD 27-60x85mm Spotting Scope to be rotated for the best viewing angle while a built in sunshade pulls out to reduce glare. Ea Mfg: Vortex Optics