SureFire Flashlight TAN POLYMER, 6V, 1.25 BEZ Virtually indestructible light emitting diode has no filament to burn out or break Precision reflector creates smooth beam without spots or rings Constructed of lightweight, corrosion-proof Nitrolon polymer and rugged aerospace-grade aluminum O-ring sealed; weatherproof Tailcap switch: press for momentary-on, twist for constant-on