STINGER w/AC 110v STINGER w/AC 110v Xenon Gas filled bi-pin bulb; spare bulb in tailcap Adjustable focus beam Up to 15,000 candela (Peak Beam Intensity); 125 lumens 3-cell 3.6V sub-C NiCd battery is rechargeable up to 1,000 times Up to 1 hour continuous use Fast Charg