Machined aluminum housing that is anodized against corrosion inside and out. Unbreakable polycarbonate lens with scratch-resistant coating. Xenon gas-filled bi-pin bulb with 30 hour life, with a spare stored in the end cap, variable spot to flood beam. Up to 15,000 peak beam candlepower; 125 lumens. Push-button head switch; momentary or constant on Up to one hour of continuous use. Flashlight only. Charger sold separately.