This handy LED combo upgrade kit from Nite-Ize lets you replace your AA mini flashlight bulb for a beam that is more powerful and provides greater illumination. The LED bulb last five times longer than the incandescent bulb that came with your flashlight, so it is economical and ecological. Extended battery life of 25 hours and beam projects up to 40 meters. Kit includes an easy-to-install push button on/off tail cap switch.