Beileshi 12 X 50mm Aurora M7 Extreme Binoculars Outdoor Sports Telescope Porro-prism binocular with 12x magnification and 50mm objective diameter BaK-7 prisms and multi-coated optics for superior resolution and image clarity Nonslip rubber armor absorbs shock; 45-foot close focusing distance 275-Feet field of view at 1000 yards, weighs 29-Ounce, limited lifetime warranty 100% quality materials used and tested extensively