National Geographic 8X40 BAK4 PORRO PRISM Binoculars for BIRDING/TRAVEL/ASTRONOMY/SIGHT SEEING
- High quality binoculars at an affordable / economical price
- Fully-coated optics increase light transmission resulting in brighter and sharper images with high contrast levels
- Stylish rubber covered aluminum body protects from rough handling
- Ergonomic thumb indents and finger ridges for extra non-slip comfort and ease of use
- Water resistant
- Soft carrying case
- Binocular straps
High Quality Binoculars at an affordable price
Perfect For:
- Bird Watching
- Sporting Events
- Nature & Wildlife
- Hunting
- Travel & ventures
- Concerts & live events
- Boating
Magnification8xObjective Lens Diameter40mm (1.57")Angular Field of View8.2°Linear Field of View (@1000 yds) / @1000 m)429 ft (143 m)Exit Pupil5mm (.19")Eye Relief16mm (.47")Close Focus (8 m)Interpupillary Distance (max)72mm (2.83")Interpupillary Distance (min)56mm (2.20")Diopter Adjustment RangeTBDTwilight Factor17.89Relative Brightness25Lens CoatingsMulti-CoatedPrism Glass (Type)Bak-4 Prism CoatingsN/AWeight24 oz (830 g)Environmental ProtectionWater ResistantNitrogen FilledNoTripod AdaptableYesCarrying CaseSoft Sided ClothDimensions173mm x 74mm x 137mm (6.8" x 2.9" x 5.4") Included AccessoriesCarrying case| Objective covers| Eyepiece covers| Lens cloth| Instruction manual
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