Nikon Aculon W10 8x21 Waterproof Yellow Binoculars Lightweight, pocket-size single-hinged, sporty design for better portability Multilayer-coated lenses for bright images; firm, comfortable, rubber-coated grip Turn-and-slide rubber eyecups facilitate easy positioning of eyes at the correct eyepoint Waterproof (up to 1m/3.3 ft. for 10 minutes) and fog-free with nitrogen gas Larger focusing ring for smooth operation