Pro Series Mod2 3W 500 Lumen - Handheld Full Size Flashlight with High/ Low Intensity and Strobe Features. Includes a Picatinny rail mount. 3 Watt Bright CREE LED, 500 Lumen max output. Bezel mounted Mode Selector Ring. Quickly switch between High and Low Intensity and Strobe feature. Custom two-way steel pocket clip, can be clipped onto clothing in either direction/orientation. Push Button Rubber On/Off switch. Include rail mount compatible with weaver/ Picatinny/ MIL-STD 1913 rails. Black Anodized Aluminum Construction. Waterproof construction. Uses 2 CR123A Lithium Type Battery (Included) Compatible with button top 18650 rechargable battery. US PAT. D804696