Fusing top-end optical performance with Nikon ATB ruggedness and full-sized view, this binocular can tackle the most extreme conditions. Waterproof and fogproof. Roof prism design. Bright, multicoated optics, turn and slide rubber eyecups, rubber armored body, long eye relief, great for eyeglass wearers, internal focus system. Features Lead and Arsenic Free ECO GLASS.