About Product:This universal night vision helmet pendant, TD 381C, has its own intellectual property rights and has been patented. This universal night vision helmet pendant is made of high strength aviation aluminum alloy, complete in function, flexible in operation, convenient in use and durable in service. With three axes of full freedom adjustable; Product 180 degrees, three docking point flip, automatic shutdown check and other functions. Its interface and functions are interchangeable with the general bulletproof helmet, which is especially suitable for the headgear needs of special operations forces.