PVS-31C-4B™ and the features built into its compact dual-tube design.

A closer look at the PVS-31C-4B™ and the features built into its compact dual-tube design. The system includes adjustable IPD, MIL-SPEC optics, ergonomic button controls, reinforced joints, built-in IR illumination, and an external power port. It is powered by a single AA or CR123 battery and features automatic light overload protection, manual gain control, and flip-up / flip-away functionality. See the full specifications of the PVS-31C-4B™ at gsci.net. #GSCI #PVS31C4B #NightVision #NightVisionTechnology #ElectroOptics #DefenceTechnology #MilitaryTechnology #Photonics