National Geographic 20X70 Rubber-armoured Porro Prism
High power binoculars with extra-large 70mm diameter objective lenses for extraordinary brightness. Excellent for astronomical sky watching and very low light observing. Unique jewel green phase shifting multi-coatings enhance sharpness & color response. Body is fully rubber armored for protection and provides a good gripping surface. Features BaK-4 Porro prisms providing superb even edge-to-edge illumination & sharpness. Focuses as close as 39 feet. Viewing angle is 3.3? (Viewing area is 174 feet across at a distance of 1000 yards). Weight: 46 oz. Includes protective compression molded dual compartment case with zipper pocket and strap plus FREE NATIONAL GEOGRAPHIC Bird Migration in the Americas wall map.
