STUNNING APPEARANCE AND OPTICAL BRILLIANCEThese 8A-42 and 10A-42 binoculars are able to gather up to 96% light transmission because aside of being phase corrected they also feature another even more professional treatment that is called "Silver Coating".Furthermore they are also waterproof and come with a truly superb-looking Open Hinge design.They are therefore a high-end option that are engineered to satisfy the most demanding users.Features: Green-coated optics Super lightweight Extra-large eyepieces Phase corrected Open bridge construction Bak-4 prisms Nitrogen filled Super wide angle Waterproof Rubber coating Central focusing