[Quality optics with stunning HD clarity 100% quality materials used and tested extensively Beautiful design and durability built to last Binoculars Blued Hermetically sealed waterproof corrosion resistant binocular for use in marine environments Coast Guard recommended 7x magnification by 50-millimeter objective configuration Premium BaK-4 prisms and fully multi-coated optics with UV protection Porro prism system for a wide field of view Durable non-slip non-skid rubber armor; limited lifetime warranty]