Xenon gas-filled bi-pin bulb with 30 hour life; spare bulb in tailcap. Adjustable focus beam. Polymer construction with non-slip grip. Up to 15,000 candela; 125 lumens. 3 cell 3.6V sub-C NiCd battery is rechargeable up to 1,000 times Lightweight, powerful, rechargeable flashlight with super-tough, non-conductive nylon polymer construction that makes it virtually indestructible. Up to 1 hour continuous use.