Vortex UHD 10X50 BinocularsWhen you want to take the best of the best to the next level Enter the Razor UHD. The Ultra High Definition optical design features an improved optical prescription and unparalleled image resolution. Whether you need to pick apart a densely packed hillside, or observe the finest details at insanely close distances, the Razor UHD can do it all! OPTICAL FEATURES Abbe Koenig Larger prism with longer optical path resulting in sharper image resolution. UHD