The wideangle Vortex lens for the Razor HD observation ranges, 65 mm and 85 mm lenses.The fixed magnification eye lens (18 / 23 ) has a 31 mm exit pupil, which allows the eye to be removed from the telescope, thereby increasing the comfort of observation. The use of ultralow dispersion glass ensures the est image resolution and colour fidelity.The optics have an antireflective XR coating and ArmorTek protective coating.The solid aluminium structure is filled with argon and sealed with an Oring, which is fully resistant to rain, moisture, fog, dust and dirt. The lens is not compatible with the Razor HD 50 mm models.SPECIFICATIONSFeaturesFeature informationGas refill ArgonAngular field of view 3.1Linear field of view at 1000 m 54mDistance from eye 31mmMagnification 23x