Ideal for observing game and other subjects at extreme long distances in wide-open and expansive terrains like the plains of the American West, the Swarovski 12x42 NL Pure Binoculars offer an ultra-wide field of view and exceptional eye relief in a compact magnesium housing. It incorporates extra-low dispersion (HD) glass elements and a variety of proprietary optical coatings. Combined with other performance features, these elements provide impressive image quality and durability. Upholding Swarovski's tradition of high-performance optics, the binoculars use highly reflective roof prisms and fully multicoated fluorite-containing HD glass lenses for superior image quality. A field-flattener lens system enhances the glass and coatings to keep the edges of the view crisp and sharp. The resulting views are detailed, vibrant with lifelike color, and exhibit exceptional contrast and resolution.