All lenses are coated with multiple layers of anti-reflective compounds for maximum light transmission. Ergonomic styling is mated with a rubber-armored exterior, providing a firm grip whether wet or dry. Great for bird watching, travel, sports spectating and nearly any outdoor adventure. Large, central focus wheel and dual adjustable diopter make focus easy to achieve and maintain, even while wearing gloves. Nitrogen-filled and O-ring sealed for total waterproof, fog-proof and shockproof performance in any environment. The all-purpose compact binoculars have multi-coated lenses and offer waterproof and fog-proof performance. Turn-and-slide rubber eyecups, complemented by long eye relief, allow the binoculars to be used comfortably by eyeglass wearers.