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Kunguang pirate monocular retro telescope telescopic children 20X50 HD high power night vision adult mini outdoor portable

Kunguang pirate monocular retro telescope telescopic children 20X50 HD high power night vision adult mini outdoor portable

   magnification: 20x

object lens diameter mm : 50mm

prism Type / Material : BK7

lens coating: Yes 

lens Pieces & Groups : 6pieces4groups

lens coating: CL/FC/BMC/FBMC 

focus system: Cent. / Ind. / Fix 

exit pupil diameter mm:   2.9

exit pupil distance mm :  15.5

FOV ANGLE : 3.5°

Ft / 1,000Yds 尺 186 ft

M / 1,000M 米 62m

closted focus: M / Ft. / 尺 2m/6.6ft

relative brightness     8.4

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