Streamlight Super-Tac Series of Flashlights is a versatile, rugged, and highly dependable flashlight that is available on the market today. When you need superior operation and light emitting power - this is the light for you! Utilizing C4 LED technology for LED indestructibility coupled with higher brightness output, Streamlight Super Tac light gives you 3.5 hours of continuous operation. O-Ring sealed for waterproof operation this tactical light can be mounted on long guns and other firearms for tactical use. These lights from Streamlight utilize a tail cap for one handed on/off operation or a continuous light. The Streamlight Super Tac C4 LED Series Lights are 3x brighter than conventional LEDs.