Product name : 40x60 HD Optics BAK4 Portable monocular telescope lens for mobilephone
Field of view : 5000/9500m
Material : metal body+optical glass
Minimum focus distance : 3m
Objective diameter : 22mm
magnification : 10x
prism : BAK4
Exit pupil diameter : 3mm
Exit Pupil Distance : 14mm
Focusing System : center individual focus
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