These compact waterproof binoculars are the ideal lightweight viewing accessory. With a solid 7x magnification and 18mm objective diameter, it has a high index BK-7 Prism for edge-to-edge sharpness and Center Focusing for fast, easy and precise focusing at all distances. Its magnesium fluoride all-glass coatings provide optimum brightness and high contrast for superior viewing results. It also has black non-slip tactile rubber armor provides sure grip and protective body covering.