Pro level performance from Nocs. An unrivaled ultra wide field of view with true edge to edge clarity, multilayer phase-correction coatings applied to the Swiss-designed prism, and a close focus of less than 2M (6ft.), these binoculars provide a wide, rich, color correct image, matching the light of the outside world inside the optics. Did we mention these are fully waterproof and fogproof, great for birding, wildlife viewing, and rugged enough to take just about anywhere! Phase Coated BaK4 Prisms IPX7 Waterproof and Fogproof Fully Broadband Multi Coated Lenses Drop Tested with Scratch Resistant Lenses