Clone BNVD/PVS-31s built by chinese distributor, 1080P 60FPS screen, blue tint to mimic WP goggles. I have experience with contract PVS-14s, PVS-7s and Jerry-31 NNVT4 tubes. These digital cameras perform about 70% as well as NNVT4 tubes. Video shown was taken at 9PM Eastern in June. The battery pack accept x4 3.7V 14500 battery These are not Image Intensifier Tube / Analog Tubes these are Digital Cameras Build Specs. Fischer 4-pin wiring like the real thing.