The Leupold Golden Ring 20-60x80mm Boone and Crockett HD spotting scope uses high-definition, calcium-fluoride lenses and the Leupold exclusive Index Matched Lens System to achieve a level of clarity at high power that's never before been achieved. Straight-View Configuration Front Focal Plane 20-60x Zoom Eyepiece HD Objective, Index Matched Lenses BAK4 Prism Glass with Phase Correction Lead-Free Lens System Xtended Twilight Optical Coatings Nitrogen-Filled Fogproof / Waterproof Rubber Armored Magnesium Alloy Housing Integrated Rail with Tripod Ready Socket Soft-Side Case, Hard Case and Tripod ** BLEMISHED products may or may not include accessories. Image may not represent the exact product number.