5 8x40 mm monocular night vision goggles military night vision military general use hunting bak4 fully multi coated normal infraredir
Structuresnight vision goggles monocular eye relief mm10mm magnification5 8 objective lens mm40 field range 5375 typeinfraredir normal materialrubber metal batterylithium battery prism typebak4 field of view5375 focus systemcentral focusing exit pupil diameter mm8 magnification5x to 99x eye relief range mm10mm 15mm exit pupil diameter range mm7mm maximum useful magnification8 objective diameter40 50mm optical systemlenses minimum focus distan