The BD XD line of binoculars from Kowa offer advanced optical performance in a durable, magnesium alloy body. These binoculars offer a high optical performance comprising bright and clear images, high resolution, and high contrast due to their XD lenses and C3 coating prism coating. Kowa's KR coating protects the lenses from dirt and other foreign residues that may affix to the lenses during normal use. Fingerprints or oils can be easily removed using proper cleaning techniques. They are easy to use and are perfect for outdoor observation. The high quality models can satisfy the requirements from beginners to experienced users with depictions of faithfully reproduced scenes of the outdoors. The binocular has a 9.8 ft. close focus as well as a 338 ft. field of view. The BD XD is also waterproof to JIS Protection Class 7 and is filled with dry nitrogen to prevent internal fogging. Twist-up, multi-step eyecups allow customization for easy viewing even when wearing eyeglasses. Eye relief is 18.0 mm.