Don't be fooled by the affordable price. These binocs will knock your socks off. That's because the folks at Vortex have invented their HD optical system that produces astonishing clarity and brilliance for far less cash than you're accustomed to paying for high-quality optics. Lenses are multi-coated to enhance sharpness and reduce glare. O-ring seals and nitrogen gas purging deliver waterproof, fog proof performance. Rubber armor protects against hard knocks and gives you a no-slip grip. You've never seen anything like 'em!