Dominate the Night. When the sun goes down, the Surefire X300V-B can expose your adversaries even while you remain virtually undetectable, giving you a huge advantage. With high-output white-light and infrared LEDs in one sealed unit, its recoil-proof LED generates a versatile 350-lumen tactical beam with abundant reach to temporarily overwhelm the dark-adapted vision of an aggressor and ample surround light to accommodate peripheral vision. The 120-milliwatt IR beam is invisible to the naked eye - use it on stealth operations involving night vision devices, no filter required. Switching between the two modes is achieved via a no-look, self-locking selector ring, even on the fly. Th Mfg: Surefire SPECS: Max output--White Light: 350 Lumens, Tactical Runtime: 1.8 Hours, Output/Runtime--IR: 120 mW/8 Hours, Length: 4 Inches, Bezel Diameter: 1.06 Inches, Weight w/Batteries: 3.9 Ounces, Batteries: 2, 123A.