Stunning optics providing crisp, clear and bright images with enhanced light transmission. All Endurance ED models benefit from Hawkes System H5 optics. ED glass is utilised to reduce colour fringing and the Fully Multi-Coated lenses provide high resolution images which ensure no details are lost when viewing at distances down to 2m. Effortless focusing and impressive depth of field makes these binoculars quick and easy to use. Water and fog proof with a high grip rubber coated body, Endurance is designed to battle the elements.. Extra-Low Dispersion (ED) Glass. High-quality ED glass combined with fully multi-coated lenses provides optical clarity and precision in all situations. Extra-Low Dispersion (ED) Glass is excellent at reducing the presence of chromatic aberrations (colour-fringing) for a much clearer and reliable viewing experience.. Clear viewing experience, whatever the weather. All Hawke Endurance ED Binoculars are Nitrogen-Purged so offer full protection against internal