Don't miss a detail. Aspheric lenses mean tack-sharp details every time you pick up your binoculars. BaK-4 prisms equal the best lenses in the industry. If so, you'll appreciate the extra-long eye relief on the UCFs. Once you've found what you're looking for, you can focus without moving your binoculars, thanks to the fast center focusing.
More coats mean less ultraviolet rays.
The UCF WRs come standard with Pentax multi-coating which also improves light transmission with no glare or flare. Tough rubber coating is easy to grip and means these binos don't leave your side even in the dust, cold or rain.