Leupolds BX-2 Alpine Binoculars use the Twilight Max Light Management System to maximize light transmission by eliminating glare-producing stray light. The system produces premium high-definition, edge-to-edge clarity and extends glassing time at dawn and dusk by up to 20 minutes. A large central focus dial delivers the precision focus you want when searching for deer in heavy cover, even when wearing gloves. Twist-up eyecups accommodate hunters with eyeglasses. A lightweight yet rugged magnesium housing protects optic integrity. The 1/4-20 tripod mount is compatible with most field tripods, heads, and quick-release plates. Nitrogen-filled for waterproof and fogproof dependability. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Binoculars.