Already highly regarded because of their favorable comparison to European binoculars costing up to four times more, Burris Signature Series Binoculars proudly introduces the enhanced Signature Select lineup. Premium optical glass that is very low tolerance precision ground and polished insures super sharp, distortion-free viewing and every lens surface is broad band multicoated for a reflection- free image. Bak4 prisms are also precision ground and polished to low tolerance specifications which virtually eliminates any out of color-phase issues. The application of premium phase correction coating takes care of the rest. And, unlike most binoculars, the prisms are coated with silver rather than aluminum for the ultimate in light transmission. We improved focus calibration by placing the right-eye diopter adjustment on a lockable diopter focus rings directly behind the center focus wheel. With their generous eye relief, well-balanced field of view and extremely tight collimation specifications, Signature Selects are easy, comfortable and a joy to use. We've added durable user-friendly twist-up eyecups and objective lens covers that are there when you need them, out of the way when you don't and not easily lost. And, of course, just like the proven Signature Series, the new Signature Select binoculars are fully waterproof, fogproof, highly shock resistant and warranted forever.