The Noblex Vector binoculars models have a 42-mm lens opening and a functional design. An open hinge connects the two halves of the binoculars. The through grip allows you to conventionally hold the binoculars with one hand, while simultaneously operating the focusing mechanics. The sturdy, water-pressure tight (nitrogen filled) and yet light housing offers maximum protection to the lenses and mechanical components inside. The high-performance lenses guarantee an impressive viewing experience with brilliant, sharply contoured and highly contrasting imaging. Experience a wide-angled view of nature with Noblex Noblex | Docter Optics Vector 10 x 42, Black Roof Prism Binocular 50587