Alpen Optics PRO 10x25 wide angle compact Binocular Compact binocular with 10x magnification and 25mm objective lens Hermetically sealed housing is waterproof, fogproof, and shockproof Multicoated BaK-4 lenses for brightness, resolution, and clarity Ergonomic rubber-armored housing for comfort and toughness Extra-wide viewing angle; measures 3.75 inches; limited lifetime warranty