Steiner Model 2304 Commander 7x50 Binoculars rubber-armored coating Imported HD OPTICS - Incorporate the finest index-matched glass and advanced lens coatings for best-in-glass image clarity. NANO PROTECTION - Hydrophobic molecular coating creates a lens surface so smooth water sheets off and dirt, dust, snow and fingerprints are repelled for easy cleaning and a clear view. SPORTS AUTO FOCUS - Delivers, once shot, always sharp, briliant 3D images from 20yds to infinity without refocusing, perfect for your active life. MAKROLON HOUSING - Durable polycarbonate with NBR rubber armoring creates a lightweight, rugged chassis that withstands 11 Gs of impact. Impervious to harsh conditions for generations of use. HERITAGE WARRANTY - We stand behind our products. Period! We will repair/replace defective products at no charge for the lifetime of the product. Warranty does not cover damage, loss or theft.