Monocular you can see in the dark and stay hidden. Magnification ,x3 5 5+Objective lens diameter,mm44 50 60Lens system59mmF/1.2 88mmF/1.7 100mmF/1.7FOV at distance 200yards,ft/m197/60 138/42 118/36Focus range,yards1.5 to infinity 1.0 to infinity 1.0 to infinityEye relief distance,mm15Dioper setting,D+4,-4Overall dimensions,mm182×100×65 198×100×65 266×100×70Weight,oz/g14.88/422 18.34/520 24.69/ ...