Craftsmanship and meticulous attention to every detail of design and production. Zeiss branded quality! Fully multi-coated with Zeiss MC coatings, durable one piece tube body and anodized finishes, self centered 2nd image plain reticle, wide fields of view, ¼ MOA, wide adjustment range, waterproof, dustproof and nitrogen filled. Lifetime, transferable, warranty. 1" Diameter main tube. To learn more about Zeiss scopes please CLICK HERE