Streamlight 69140 Vantage LED Tactical Helmet Mounted Flashlight - 115 Lumens Rotates 360 degrees on clamp; Bright blue tail light LED On/off switch operates with heavy gloves on; Attach or remove in seconds with no tools Clamps on above or below helmet brim; Bulb: LED; Finish: Matte Black Output (lumens): 115; Power Source: CR123A Lithium, x 2; Switch: Dual-Direction On/Off Switch