Streamlight PolyTac LED Series Flashlights are virtually indesctructable, extremely bright, nylong polymer tactical lights. Utilizing superior C4 LED technology to bring you up to 130 lumens of light output! Solid State Power Regulation provides utlimate light output throughout the battery life. Tailcap allows for momentary or constant "on" operation. The PolyTac C4 LED Series Flash Lights by Streamlight are IPX7 rated and are waterproof up to 1 meter (3 feet) for 30 minutes. The power is provided for two 3V CR123A lithium batteries. Law enforcement and even other demanding professionals will appreciate the rugged construction of the Streamlight Poly Tac Flash Lights.