3 Watt Bright CREE LED, 250 Lumen max output. Bezel mounted Mode Selector Ring. You can quickly switch between High and Low Intensity and Strobe feature. Strobe Flashlight feature will disorientate your target and extend battery life. Custom two-way steel pocket clip, can be clipped onto clothing in either direction/orientation. Push Button Rubber On/Off switch. Black Anodized Aluminum Construction Tailcap Body factory machined for a lanyard (not included). Flashlight central body diameter is 0.83". Uses 1 CR123A Lithium Type Battery (Included) Length: 3.94" Weught: 3.1 oz. (with Battery) US PAT. D804696