Vortex Razor HD 20-60x85 Spotting Scope is simply one of the finest spotting scopes you can buy. The Vortex Optics Razor HD Spotting Scope competes at the highest level of performance. The sophisticated triplet apochromatic lens system allows this straight-body Spotting Scope to deliver high-definition views across the entire field of view - no color fringing, degradation of resolution or dilution of color fidelity at longer viewing distances. The premium HD lens glass provides high-definition images with superior resolution and color fidelity, and Vortex's XR lens coatings increase light transmission for further image brightness. The Vortex 20-60X Razor HD Spotting Scope is fully waterproof, with an argon-purged interior for fogproof performance in any weather condition. If you're keeping score, this Vortex Spotting Scope has a total that adds up to 110 percent fast!