Upgrade your AA Mini Maglite with L.E.D. Technology and the convenience of an "On Demand" push-button on/off switch. Extends battery life up to 20 hours - Lasts four times longer than with an incandescent bulb! Features three bright white L.E.D.s . Brilliant quality white light vs. yellow hue of an incandescent bulb ,10 Year lamp life - 100,000 hours of continuous life. Shock proof push button switch - turn on/off without adjusting the focus!