---Fully multi-coated lenses gives you better light transmission to bring optimum brightness and true color across the entire light Spectrum ---Reticle etched on the Glass that provides excellent backing support for complex reticle design and offers great durability and much higher shock resistance to Recoil ---Heat treated one piece tube gives the scope extra strength over multi-piece tubes. A one piece tube also is better at keeping moisture out thus keeping your scope fog proof for the life of the product ---Nitrogen purging dramatically reduces the moisture inside the tube and helps maintaining Fog proof and waterproof ---Aircraft grade aluminum tube that has exceptional strength and superior mechanical integrity will protect these world class optics no matter what punishment you Throw at it ---Sport type: Hunting.