DESC: Action 7x50. Nikon binoculars are made with precision-aligned, fully coated Nikon optics incorporating Bak-4 high-index prisms. State-of-the-art optical technology, combined with quality Nikon construction and materials, provide you with unsurpassed clarity, brightness and strain-free viewing pleasure. Unbeatable optical performance and value is why we can say "Nikon Sport Optics . . . Leadership you can see".