Waterproof, shockproof binocular with 7x magnification and 50mm objective lens * Sports-Autofocus system puts everything into focus from 20 yards to infinity * BAK-4 prisms, fully multicoated optical surfaces, and 20mm of long eye relief * Light transmission peaks at over 90 percent for viewing in low-light conditions * Measures 8.2 x 2.8 x 5.2 inches (W x H x D) and weighs 37 ounces; 10-year warranty