Monocular you can see in the dark and . stay hidden.. Magnification ,x 2 3 5Objective lens diameter,mm 32 44 50Lens system39mmF/1.2 59mmF/1.7 88mmF/1.7FOV at distance 200yards,ft/m302/92 197/60 118/36Focus range,yards0.25 to infinity 1.0 to infinity 1.0 to infinityEye relief distance,mm15Dioper setting,D+4, -4Overall dimensions,mm156×79×50 170×79×50 180×80×50Weight,oz/g14.88/422 18.34/520 24.69/ ...