3 Night Vision Goggle w/IR and Built in Auto Brightness Control. The PVS-7B is built around an 18 mm U. It has state-of-the-art Automatic Brightness Control (ABC), rapid-recovery Bright Source Protection (BSP), Low battery indicator and built-in IR illuminator for close-up illumination in complete darkness. Goggles have a quick release lever that permits one-hand mounting and dismounting from the headgear. Standard PVS-7B System includes: Head-mount assembly Demist shield (2) Sacrificial window Soft eyecups (2) Soft carrying case Shoulder strap Neck cord Brow Pads Front lens cap Lens ...