3.8" Compact Aluminum LED Flashlight with "Slide On" Clip, 1501B (1*AA) High quality, waterproof, shock resistant and erode-preventable Length: 3.8" Dia. 1" Color: Black Luminescence ultra-bright white LED light, soft, steady and lowest power-consumption With the use of solid aircraft aluminum case, the beams of light are focused On /Off button at the tail. With "slide on" clip. Powered by 1 x AA Battery ( not included ).