Bushnell Legacy WP Porro Prism Binocular Quality optics with stunning HD clarity 100% quality materials used and tested extensively Beautiful design and durability built to last Adjustable zoom binoculars with 10 to 22x magnification and 50-millimeter objectives Porro prism system with fully multi-coated optics and BaK-4 prisms Rugged rubber armoring absorbs shock and offers a secure grip Center focus; twist-up eyecups; long eye relief 100 percent waterproof / fogproof; limited lifetime warranty