binoculars β 42

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21mm large eyepiece

3 gear heightened eyepatch adjustment

Champagne gold metal focusing wheel

FMC (fully optical coating file) increase Color Restoration

BAK4 Schott prism effectively increase visual field and visual definition

Nitrogen filled waterproof (water depth 1m, available to soak 30 minutes) antifogging

Close Focus4m4m
Phase filmNoNo
Lens CoatingFMCFMC
Field of View:ft@1000yds/m@1000m330/110 ft/m304/101 ft/m
Objective lens diameter42 mm42 mm
eyepiece diameter21mm19 mm
Diopter ControlYesYes
Exit Pupil20.14 mm16.9 mm
Focus Systemcentral focusingcentral focusing
Exit Pupil Diameter5.18 mm4.2 mm
Waterproof/anti fogYESYES
Prism SystemBAK-4BAK-4
Length140 mm140mm


All optical products bought from Kunming Optical are quality guaranteed with lifetime warranty.

Our optical products are made with high quality materials, flawless production and strict QC test , complies with the Federal Trade Commission. Please contact for any questions.

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