|Simply one of the finest spotting scopes you can buy, the top-tier Vortex Razor HD spotting scope competes at the highest level of performance. The sophisticated triplet apochromatic lens system delivers high-definition views across the entire field of view—no color fringing, degradation of resolution or dilution of color fidelity. HD premium high density extra-low dispersion glass lens elements are carefully selected and precision-crafted to exacting standards for true-to-life images of startling clarity, resolution and color accuracy. Exterior lenses are protected by ArmorTek—an ultrahard, scratch-resistant compound that repels oil, dirt and the corrosive salts of fingerprints. Fully multi-coated with scratch-resistant XR coatings for extremely high resolution and optimal light transmission. A die-cast magnesium alloy body with strategically-placed rubber armoring ensures ultimate strength, durability and lightweight performance. 100 percent waterproof, fogproof (purged with argon gas), dustproof and shockproof construction.