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 opticsSuper lightweightExtra-large eyepiecesPhase correctedOpen bridge constructionBak-4 prismsNitrogen filledSuper wide angleWaterproofRubber coatingCentral focusing