DESC: When good is not good enough...Nikon Premier defines the best of the best.PRODUCT FEATURES: High resolution, fully multicoated optics; Silver mirror prism coating; 100% waterproof/ fog-proof; Durable, lightweight magnesium- alloy construction; Eco-glass manufactured without lead or arsenic; All metal construction, rubber armored; Phase correction coated high index prisms; Slide-and-lock eyecups and long eye relief for easy viewing with or without eyeglasses.