Emissive Energy Corp. X1MT-WT White LED Flashlight Designed with double coated glass lens that concentrates energy into potent beam Features half turn switch cap and highly wear resistant anodized thread with a tightly sealed piston Smooth, reliable piston that delivers energy and prevent s electronic damage The knurled cap features a lanyard hole and is O ring sealed to enhance water resistance The X1 features a regulated circuit that provides constant energy