Featuring 10x magnification and 50mm fully coated objective lenses for sharp and crisp images. Dry nitrogen-purged and sealed to prevent fogging, clouding and moisture damage and O-ring sealed for 100% waterproof protection. Rubber armor covering protects them from harsh weather conditions and detachable lens covers are included for added protection. Fold down eyecups allow you to view with or without eyeglasses. With ergonomic design and impressive features, these rugged Colorado roof prism binoculars perform extremely well in all weather conditions. Accessories include neck strap and soft carrying case.