Steiner Model 575 Marine 7x50 Binoculars HIGH CONTRAST OPTICS - For bright, high-contrast images with true-to-life color reproduction, 7x magnification, 50 mm objective diameter, field of view at 1000YD - 356FT. SPORTS AUTO FOCUS - Delivers, once shot, always sharp, briliant 3D images from 20yds to infinity without refocusing, perfect for your active life. FLOATING PRISM SYSTEM - Uses flexible silicone lens mounts to absorb severe shock, impact and abuse without damage. WATERPROOF AND RUBBER ARMORED - Creates durable construction that can stand up to wet conditions and ergonomic ridges and pads for a secure, comortable grip. 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.