High Definition Perfomance: Experience the difference with Leupold's High-Definition lenses, which provide unparalleled clarity, color, and image resolution at all magnification levels; Arca-Swiss Compatible Base: The Arca-Swiss base attaches easily to compatible tripods without needing an adapter plate. It also accommodates tripods that aren't built on the Arca-Swiss system, using its integrated 1/4-20 threads; Smooth Focusing: Features an extremely smooth focusing system for fine adjustments; Tripod Ready: A built-in 1/4-20 rotatable tripod adapter port makes it easy to mount to a tripod; Interchangeable Form-Fit Eyeycups: The Form-Fit eyecups come in two different sizes, allowing you to customize your viewing experience based on your preferences; Armor Coated: The durable housing is shrouded in a easy-grip rubber armor coating that provides a positive grasp in all conditions; Waterproof: Leupold pioneered modern technology using advanced internal gasses and sealing methods that withstand extreme temperatures, elevation changes, and shocks, so the internals of the optics stay moisture free and crystal clear for life; Fogproof: Leupold pioneered modern technology using advanced internal gasses and sealing methods that withstand extreme temperatures, elevation changes, and shocks, so the internals of the optics stay moisture free and crystal clear for life