This Rev 5 AA LED flashlight from Maratac features a Copper body with knurling and twist-head switch for three brightness levels. Cree Nichia 219 emitter and orange peel reflector. The lens has been treated with an anti-reflective coating and the circuit is reverse polarity protected. Runs on one AA battery (Alkaline, Lithium, NiMH or Ni-Cad. Do NOT use high voltage rechargeable batteries!) Includes pocket clip and spare o-ring. Mode: Output / Runtime High: 205 lumens / 75 minutes Medium: 45 lumens / 4.5 hours Low: 5 lumens / 12 hours