Our LED Combo Upgrade ll replaces the incandescent bulb of a AA Mini Maglite(TM) with the bright white beam of LED, and the two-handed on/off twist with a simple push-button tail cap switch. Your AA Mini Maglite(TM) will not only be easier and more convenient to operate, it will have higher quality, more powerful, and more efficient illumination. The LED bulb lasts a virtual lifetime and uses less power, giving you five times the battery life.