PVS-31P is a high-performance military head mounted night vision binocular built by Hyperion Optoelectronics with reference to pvs-31, an active head mounted night vision binocular  in the United States. It is very suitable for general military fans and outdoor fans as well as military users at night. Low light version PVS-31P has the characteristics of super large field of view, high definition, no distortion, light weight, high strength (the overall performance is much better than the original version of the U.S. military products), which is the ideal choice for military night equipment.