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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. 米 / 尺 2m/6.6ft
relative brightness 8.4
