Boasts durable design and rubberized, abrasion-resistant finish Porro prism and coated lenses provide sharp viewing 10X magnification, 50-Millimeter lens diameter, and auto focusing Porro prism 25-Feet close focusing distance, 27-Ounce weight 9-Millimeter eye relief and 5-Millimeter exit pupil, 300-Feet field of view at 1000 yards