Kowa's BD25 compact binocular combines a selection of features including small size, lightweight and single hinge for ease of use with multi-coated lenses and C3 prism coatings, providing first-class light transmission and brighter, sharper images in a portable package. The glass parts are made from environmentally-friendly eco-glass and are designed and manufactured in Japan. 100% waterproof and filled with nitrogen gas to prevent internal fogging, these binoculars are reliable in even the most adverse conditions. The rubber surface doubles as a grip, providing peace of mind in wet conditions. They also have an impressive close focus range of 1.8m, making them viable for insect surveys as well as birding. A great choice for traveling naturalists.
BD25 8x25
Objective Lens Effective Diameter: 25mm
Magnification: 8x
Relative Brightness: 9.6
Twilight Factor: 14.1
Eye Relief: 16.0mm
Real Field of View (degrees): 6.3
Minimum Focusing Distance: 1.8m
Exit Pupil Diameter: 3.1mm
Field of view at 1000m/yds: 110
Dimensions (Length x Width x Height): 111x107x39mm
Weight: 320g
BD25 10x25
Objective Lens Effective Diameter: 25mm
Magnification: 10x
Relative Brightness: 6.3
Twilight Factor: 15.8
Exit Pupil Diameter: 2.5mm
Real Field of View (degrees): 5.0
Field of view at 1000m/yds: 87
Minimum Focusing Distance: 1.8m
Dimensions (Length x Width x Height): 111x107x39mm
Weight: 320g
Eye Relief: 18.0mm