Some of the most highly acclaimed optics in the world, Nikon Premier 8x32 Binoculars are engineered to deliver supreme performance in extreme conditions. Their silver-coated prisms are phase-correction coated for enhanced resolution and fully multicoated for bright, vivid sight pictures. Nikon's Field-Flattener Lens System provides crystal-clear edge-to-edge viewing. The lightweight magnesium-allow body has a rubber-armored coating for extra shock resistance and an all-weather grip. It's also nitrogen-filled and O-ring sealed for waterproof, fogproof performance. Click-adjustable sliding rubber eyecups are extremely compatible with eyeglasses.