Pentax U-Series Compact Porro-Prism UP 10x25mm WP Porro Prism Binocular Black. These Binoculars from the pioneers at Pentax feature fully-multi-coated optics that deliver exceptional light transmission and quality. With its proprietary uni-body design the Pentax Compact UP Binocular fits easily into a bag or pack without worry of damage or breakage. No matter your viewing needs the Pentax U-Series Binocular will provide crystal clear brightness. Specifications for Pentax U-Series Compact UP 10x25 Binocular: Manufacturer: Pentax Color: Black Magnification: 10 x Objective Lens Diameter: 25 mm Prism System: Porro Prism Material: BAK4 Eye Relief: 15 mm Exit Pupil: 2.5 mm Field of View Linear: 26.5 m at 1000 m Field of View Angle: 5 degrees Optical Coating: Fully-Multi Coated Binoculars Focus System: Center Focus Twilight Factor: 6.3 Interpupillary Distance: 57 - 72 mm Close Focus: 6.2 ft Length: 4.5 in Weight: 12.3 oz Finish: Black Package Type: Box Included Accessories: Eyepiece lens caps Neck Strap Case Magnification Type: Fixed Size Class: Compact Features of Pentax U-Series Compact UP 10x25 Binocular New fully multi-coated optics Inverted porro prism design Aspherical lens elements providing edge-to-edge sharpness High Quality BaK4 prism to enhance transmission and resolution Dual-axis single body design with synchronized eye-piece IPD adjustment Deep blue-tinted rubber armouring for maximum protection and grip Pull-up eyecups combined with comfortable eye-relief Centrally-located lockable diopter adjustment Package Contents: Pentax U-Series Compact UP 10x25 Binocular Pentax 61932: U-Series Compact Porro-Prism UP 10x25 WP Binocular Black