National Geographic 8X40 Fernglas Binocular

The classic Porro prism binocular are rugged and compact, making it the ideal traveling companion. The lenses and prisms of BK-7 glass provide high image quality. Focusing takes place via a convenient center focusing knob. Thanks to the diopter adjustment these binocular are suitable for spectacle wearers. Product Features: Brand: National Geographic Binocular Type: Binoculars Prism Type: Porro Magnification: 8 fixed Objective Diameter: 40 mm Material Prism: BK-7 Exit pupil min: 5 mm Diopter setting: Yes Field of view at 1000 m: 110 m Light Intensity: 25 Twilight factor: 17.7 Near focus from: 7 m Focusing system: Central focus wheel Interpupilar distance min: 56 mm Interpupilar distance max: 72 mm Eye relief: 15 mm Temperature range min: -10 C Temperature range max: 40 degree Celsius Color: Black Body armoring: Rubber Dimension: 172 x 155 x 55 mm Net Weight: 80 gm Details: Rugged and compact Ergonomic body Adjustable interpupillary distance with ergonomic body