The Celestron Nature 10x 42 Roof Prism Binoculars are high-performance roof prism binoculars with superior optical quality, 10x magnification & 42mm objective lenses. The Nature series are waterproof & fogproof & the main body is made from rugged aluminium & durable rubber for a non-slip, comfortable grip & impact protection. This model features a state-of-the-art design with a modern open frame style, as well as fully-coated optics & high precision BAK-4 prisms for maximum light transmission with high contrast & colour rendition. The Celestron Nature 10x 42 Roof Prism Binoculars are ideal for bird & nature watching, camping, hiking, sports & general outdoor use. The nature series are equipped with twist up eyecups to provide easy adjustment for your eyes, a soft case & binocular straps.