Specifications for Pentax Z-Series Premium ZD 10x50 ED Binocular: Color:Green Magnification:10 x Objective Lens Diameter:50 mm Prism System:Roof Prism Material:BAK4 Eye Relief:22 mm Exit Pupil:5 mm Field of View, Linear:26.5 m at 1000 m Field of View, Angle:5 degrees Optical Coating:Protective Coated, New Premium level lens Coated, Fully Multi-Coated, Full-color (Flat) Multi-Coated Binoculars Focus System:Center Focus Twilight Factor:25 Interpupillary Distance:58 - 74 mm Close Focus:6.6 ft Diopter Adjustment Range:-3 - 3 dpt Weather Resistance:Yes Length:6.7 in Weight:30.2 oz Finish:Green Package Type:Box Additional Features:ED WP Full Size Binocular Included Accessories:Neck Strap, Case, Eyepiece lens caps Magnification Type:Fixed