Minox High Grade 8x33 Binocular Ideal for hunting, tracking, bird watching or observing wildlife 8x magnification; lens diameter of 33 mm; field of view range of 7.5 degrees M*-coating for the lenses, which consists of up to 21 different layers on the glass surface Filled with state-of-the-art Argon gas to ensure reliability and durability High-tech optical glass is made by SCHOTT AG, a company of the Carl-Zeiss-Stiftung