5 1/2" overall. Black anodized precision machined high strength aerospace aluminum body accented by an extremely durable foamed vinyl grip. Three high output thermally controlled LEDs. Each light source has its own parabolic reflecting chamber resulting in a brilliant white penetrating beam of incredible brightness. Patent pending Soft-touch Activation System. Dual contacts provide both intermittent and constant on/off activation. Uses two 3V Lithium power cells providing one hour of continuous run time with a ten year shelf life. Made in the USA.