| The most sophisticated, lightweight and reliable tactical lights available. Choose a xenon for a bright, long beam of light with adjustable focus. Or, a durable LED for a soft, super bright circle of light. Spare bulb included with xenon models (except in shock proof models). Anti-roll head on some LED models. Powered by lithium batteries, the professionals choice. Streamlight's new Night Com LED provides night vision capabilities and your choice of red or green LEDs. The Tactical Strion® has all the great features of the Strion® and adds the versatility of a grooved barrel for a secure gun mounting option.