Nikon 7581 MONARCH 5 8x56 Binocular (Black) All monarch 5 binoculars are Now built with Nikon's legendary ED (extra-low dispersion) glass lenses, which correct chromatic aberrations across the furthest limits of the visible light range and effectively compensate for color fringing. Dielectric high-reflective Multilayer Prism coatings are applied to all lenses and Prism coatings to provide high-contrast images and accurate color reproduction. Massive 56mm objective lenses provide superior light gathering ability for overcoming less than ideal lighting conditions.