Leupold Gr 10X42Mm Hd Binocular Brown 62815 High-definition binoculars with 10x magnification and 42mm objective aperture Calcium-fluoride high-definition lenses create superior clarity and resolution Index Matched Lens System works with DiamondCoat coating for optimal light management Phase-coated prisms eliminate diffraction and ensure peak clarity; seven-foot close focusing distance Includes quick-release binocular harness; measures six inches long; lifetime guarantee