Bushnell H20 binoculars set standards for a true waterproof binocular at an affordable price. Completely o-ring sealed and nitrogen purged for waterproof, fog proof protection any season. It features rubber armoring,center focus and a fully coated optics for durability and clarity. Porro prism models are multi-coated for reduced light loss and glare. Great for boating, outdoor/nature, general use, hunting, and stadium sports.