Steiner Optics Predator Series Binoculars - Waterproof and Fogproof Optics for Hunting and Shooting Optimized Light Transmission: latest-generation advances in low light performance and brighter images and up to 3-4% better light transmission CAT Color Adjusted Transmission: amplifies contrast in the peak human vision sensitivity range, to spot game in any environment Fast-Close-Focus: central focusing wheel requires minimal rotation for quick absolute sharpness from close-up to infinity Light and compact, ideal for those on the move who need the versatility of good magnification and wide view Lightweight Roof Prism Design: less bulk to fit into your pack and stay out of the way