This is a diffuser/lens protector for the Dereelight Xsearcher. It functions well, allowing the lens to be protected and light to provide sufficient wash without a hot-spot for use walking, navigating, and really all the sorts of close-in viewing the Xsearcher is not particularly good at. WSF is demonstrated functional with the XPG2 emitter, and does NOT get hot. Other colors haven't been tried, but are assumed equally as functional with perhaps tint-adding features. (still in testing) This has not been tested with the IR emitter for functionality.