Perfect for the hunt of a lifetime, Athlons Cronus ED Spotting Scope is built with high-end optical components and equipped with dual speed focus knobs for faster and finer focus adjustments. Extra-low-dispersion glass is used for clear, sharp images without a hint of chromatic fringe. Athlons advanced fully Multicoated lenses and ESP dielectric coating combine with the BaK-4 prisms for dramatically enhanced light reflection for brighter, crystal-clear images, so you can spot your next trophy during the low-light hours of dusk and dawn. An XPL coating on the exterior of the lens protects against dirt, oil and scratches. The magnesium chassis adds strength and durability, while reducing overall weight by as much as 30%. Argon-gas purged, fogproof and waterproof to withstand rainy days afield. Rotating ring allows rotation while on tripod. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Spotting Scopes.