The KX4 LED Conversion Head is compatible with any SureFire flashlight equipped with a P60L LED, P60, P61, P90 or P91 emitter/lamp assembly. The unit will increase the output of flashlights equipped with the P60L by 50%. This conversion head's LED light has a longer life span than an incandescent bulb, reducing the incidence of replacement; there's no filament to burn out. Runtime is 2-3.3 hr, depending upon flashlight model.
This KX4 is tough and durable, made from anodized powder-coated aluminum. The weatherproof O-ring and gasket seal the flashlight tightly to prevent dirt, dust and water from entering.