name:night vision monocular Objective side has C mount, eyepiece can be connected to a normal camera. Magnification:2x Field of view:19 degree. Objective focusing range:5m to infinity Eyepiece diopter range:±5 diopters Exit pupil diameter:7mm Resolution:?1.6mrad Operation voltage:3V DC(use battery No.5) Image intensifier:first generation image intensifier Mass:0.6 kg