Product Description
Palm-sized but full-featured - the 10x25 National Geographic Expedition Series Binoculars from Explore Scientific are useful for travel - sports - music festivals - and all-around use Fully multicoated lenses and BAK4 prisms optimize the view - and twist-up eyecups make it easy to see the full image - with or without eyeglasses on The Expedition Series binoculars are waterproof and purged with dry nitrogen gas to prevent internal fogging from sharp temperature changes
Features: Twist-up Eyecups, Diopter Adjustment, Nitrogen-Filled, Fog & Waterproof, 331' Field of View, BAK4 Roof Prisms, Fully Multicoated Lenses
Prism Type: Roof
Magnification: 10x
Objective Lens Diameter: 25 mm
Angle of View: 6.8 degrees (Actual)
Field of View: 331' @ 1000 yd / 109.9 m @ 1000 m
Minimum Focus Distance: 19.7' / 6 m
Exit Pupil Diameter: 2.5 mm
Eye Relief: 10 mm
Diopter Adjustment: Yes
Focus Type: Center
Fogproof: Yes - Nitrogen Filled
Environmental Resistance: Water-Resistant (Unrated)