The PolyTac 90X USB or PolyTac 90X are 500 lumen tactical lights that can use either a proprietary Streamlight Li-Ion USB rechargeable battery pack or Two CR123A disposable batteries. The PolyTac 90X USB is a complete rechargeable system that comes with a charge cord and a Streamlight Li-Ion USB battery that features an integrated micro-USB charge port. The PolyTac 90X comes packaged with two CR123A batteries. Both lights feature a switch for momentary or constant on operation, an integrated carabiner style D-ring, and a pocket clip for a variety of attachment methods. In use, the colored LEDs in the button show battery power remaining. Features green, yellow, red, and blinking red when charging or changing cells is needed. The glass filled nylon housing makes the light extremely durable and abrasion resistant. Available in black, yellow, and orange.