Replacement infrared lens for the Strobe 200™, Strobe 300™, Strobe 3500™, Strobe 3500™ XL Expedition, TEKNA® Lite 6 Strobe, ELZ™ strobe, and Nite-Flight landing strip light; for use as an infrared illuminator/signaling/identification device. Requires a black body (battery case) for proper function. 99% covert, slight purple visible signature out to a few yards.