1.MHB-X super Gen 2 and 3 NV monocular 2. ... camera, video recorder,CCD video camera and use super Gen 2 and 3 Russian sophisticated Image Intensifier Tube ... / 3x1x / 3xField of view,deg 40 / 1340 / 13Detective range,m400500Eye relief distance,mm5555Diopter adjustment,d+5/-5+5/-5Dimension ... -3000030000-40000Resolution,lp/mm57-6457--72Operating Temperature Range,-40/+50-40/+50Relative hummidity98%98%