Vortex's Razor HD Spotting Scope line combine performance with simplicity. Equipped with an triplet apochromatic lens system and a porro prism with dielectric prism coatings, the Razor HD series delivers exceptional image quality with maximum clarity and edge-to-edge sharpness. No color fringing, degradation of resolution, or dilution of color fidelity even at long viewing distances. Other features include die-cast magnesium alloy body and rubber armor, giving the Razor HD Spotting Scopes outstanding durability.In addition, the Razor HD Spotting Scopes feature an adjustable eyecup, dual focus, a built-in sunshade, and a rotating tripod ring.