GPO Passion HD Full-Size Binoculars - 15x50 - While a 15X power binocular and a 50mm binocular are typically big, this 15x50 binocular stands out for its compact design when compared to other 15X models. Embodying a large field of view and an overall slim design, GPO proudly introduces the PASSION HD 15x50 binocular, which perfectly balances high magnification, size and weight. Specifications: Exit Pupil Diameter: 3.3mm Ocular Diameter: 42.4mm Close Focus: 9.8ft Interpupillary Distance 58-76mm Waterproof 500 mbars Transmission 91% Features: Incredible light transmission, 99.7% ags Double HD glass technology Great field of view with perfect edge sharpness GPObright lens coating technology Center focusing locking diopter Tough aluminum eyecup tubes Magnesium micro-bridge and body Waterproof and fogproof PASSIONdrop hydrophobic coating Included Accessories: Strap/Cradle Tripod Adapter Cleaning cloth Hard case Neoprene strap Hard case strap Objective covers Ocular covers