BARSKA Huntmaster 8X42 Waterproof Binocular O-ring sealed for complete waterproof protection and Dry nitrogen-purged and sealed to prevent fogging, clouding and moisture damage Phased coated prisms for higher resolution and sharper contrast Fully multi-coated optics maximizes light transmission for superior brightness and clarity Extreme close focus distance with wide field of view. Exit Pupil: 5.25 mm, Eye Relief: 18.4 mm. Objective Lens: 42 mm Optimum long eye relief with twist-up eyecups and rugged shock -absorbing rubber armor, includes carrying case and neckstrap O-ring sealed for complete waterproof protection and Dry nitrogen-purged and sealed to prevent fogging, clouding and moisture damage Phased coated prisms for higher resolution and sharper contrast Fully multi-coated optics maximizes light transmission for superior brightness and clarity Extreme close focus distance with wide field of view. Exit Pupil: 5.25 mm. Objective Lens: 42 mm. Eye Relief: 18.4 mm Optimum long eye relief with twist-up eyecups and rugged shock -absorbing rubber armor, includes carrying case and neckstrap