Streamlight Poly Tac LED Flashlight Black 88850 Streamlight's Poly Tac LED is made of high impact super tough nylon polymer for exceptional durability and a sure grip. All openings o-ring sealed for weather resistance. Streamlight Poly Tac Features: C4 LED technology, impervious to shock with a 50,000 hour lifetime. 3 hours of continuous runtime to the 10% output level. LED Solid State Power Regulation provides maximum light output throughout battery life (LED).