The Nikon ProStaff 3S 10×42 Binoculars offer a 10× magnification of a scene and up to 367 ft field of view at 1,000 yards. They come with silver-alloy-coated roof prisms and 42mm objective lenses with anti-reflection, multi-coated optics that improve light transmission and generate bright, high-contrast images across the field of view. These binoculars offer a 63° angle of view in almost any lighting and weather condition. They offer an inter-pupillary adjustment of 56-72mm. With the large, central knob, the focus range of these binoculars can be easily adjusted. These binoculars are made with lead- and arsenic-free eco-glass. Twist-up rubber eyecups facilitate use of these binoculars with or without eyewear.