Swift 8.5x44mm BWCF Audubon Birder Waterproof Binoculars

Swift Binoculars — SKU EB-861676897

Price: $131.60 USD. In stock.

Product Info for Swift 8.5x44mm BWCF Audubon Birder Waterproof Binoculars Swift 8.5x44mm BWCF Audubon Waterproof Binoculars 820 is Swift's premium choice in porro prism birding binoculars. An 8.5x power binocular is a great compromise between the classic debate of magnification, size and exit pupil diameter. You'll have an exit pupil diameter of 5.1mm, great enough for viewing in nearly all birding situations, and a very wide 8.2? angle of view for an 8.5 magnification binocular. Specifications for Swift 8.5x44 mm BWCF Audubon Birding Waterproof Binocular #820: Features of Swift 8.5x44mm…

Brand

Swift

Weight

1.72 lb (780 g)

Dimensions

7.6 x 5.5 x 2.8" (194 x 139 x 71mm) WxHxD

Eye Relief

17mm

Focus Type

Center

Prism Type

Porro

Product Type

Binoculars

Angle of View

8.2°

Magnification

8.5x

Tripod Socket

Yes

Twilight Factor

19.3

Weatherproofing

Waterproof & fogproof

Objective Diameter

44mm

Exit Pupil Diameter

5.2mm

Relative Brightness

26.8

Minimum Focus Distance

10.0' (3.0 m)

Field-of-View (@ 1000 Yds)

420' (139 m at 1000 m)