Streamlight 88031 ProTac 2L 350 Lumen Professional Flashlight with High/Low/Strobe w/2 x CR123A Batteries - 350 Lumens Anti-roll head design Removable, reversible pocket clip Multi-function push-button tail switch High for bright light: 350 lumens; 6,300 candela; 159m beam; runs 3.25 hours Low for longer run time: 30 lumens; 600 candela; 49m beam; runs 35 hours