Gerber Infinity Ultra Task Light.
The Gerber 22-80027 Infinity Ultra-M Series of lights are military-grade versions of our most popular lights. With a hard-anodized coating, double o-rings, and water-sealed circuit board, the Ultra-M is quite possibly the toughtest light on the planet.The Ultra-M is available in three different output modes: white for general purpose illumination, red for night operations, and NVG low-detect which prohibits detection by night vision goggles, full color rendering for map reading. One AA battery is included.