OneTigris Tactical Helmet Light Wild Suvival Light Multi-use LED Light Military Headlamp Convenient for carrying, compact, hands-free, low-output for multi-purpose Can be used with some tactical gears such as helmet, belt, some rifle cases, etc Adjustable light color(red-white or blue-white) and you can adjust the quantity to light (light color is shipped randomly) CR123A battery is needed (not included) Excellent use, not a tactical light, but an unbeatable utility light