The National Geographic 8x40 BAK4 Porro Prism Binoculars are expertly crafted for birdwatchers, nature observers, and low-light explorers. Featuring fully multi-coated optics and high-quality BAK4 prisms, these waterproof binoculars deliver exceptional brightness, sharpness, and true-to-life color with edge-to-edge clarity. Their wide 469-foot field of view at 1,000 yards and close focusing distance of just 15 feet make them ideal for spotting everything from distant birds to nearby wildlife. The rugged, rubber-armored housing offers durability and a secure grip, while long eye relief ensures comfortable use for eyeglass wearers. Complete with a strap and carrying case, these binoculars are built to perform in the field, on trails, or even under the stars.