1. Look: The Night Vision Goggles is just a Dummy model, no function!1:1 Ratio of the real AN/PVS31 Night Vision Goggles model an incredibly realistic appearance. With its detailed design and construction, it's the perfect cosplay prop or display item 2.Simulation Design: When using the Dummy Model night vision device, as it tilts downwards to 90 degrees, the internal mechanism triggers the emission of a green light, simulating the glow of night vision goggles. (powered by non-replaceable batteries), as the device is adjusted upwards, the light automatically shuts off 3.Compatible NVG Mount: The included night vision mount is compatible with GPNVG18/AN/PVS31/PVS15/PVS18, adding to the versatility of this dummy model. The most tactical helmet can be installed via NVG mount, such as FAST series of MH, BJ, PJ, MARITIME helmet series, MICH helmet series, the EX /IBH helmet 4.Cosplay Essential: Ideal for cosplayers, this AN/PVS31 Night Vision Goggles model is a must-have accessory. It adds authenticity and style to your tactical or military-themed cosplay outfits