The SOG DarkEnergy 247 flashlight gives you 247 lumens of blindingly bright light in the palm of your hand. With a full on full off switch that also half-taps to 40% output and then tactical strobe, this 6061 T6 aluminum powerhouse gets the job done. Count on us when light is not enough but when blindingly bright is. Specifications: Overall Length 5.1" Weight 4.1 oz Battery (2) CR123A Max Output 247 Lumens Run Time High: 145 min. Low: 485 min. Body Class II, Type III, 6061-T6 Aluminum Finish Black Hard Anodized Includes Pocket Clip