The Snypex knight d-ed 8x50 dielectric optical binocular is a compact fog and waterproof binocular with an outstanding close focus of just 3.92 ft. It features bak-4 prisms with precision crafted ed glass. Fully multi-coated optics and phase correction coatings enable a wide field of view. This binocular delivers true-to-life images with startling clarity, color accuracy, and excellent brightness in all environments. All Snypex knight d-ed binoculars are protected with a durable armored rubber housing to absorb shocks.