Streamlight 90542 Survivor LED Flashlight Alkaline Battery Pack without Batteries Rubber dome push-button switch easy to use with gloves Dual power source: Rechargeable NiCd battery; also accepts 4 AA alkaline batteries C4 LED with high, low, emergency flash and moonlight modes High for a super-bright beam that pierces through smoke: 41,000 candela; 175 lumens; 405m beam distance; runs 3.5 hours (NiCd); runs 4 hours (alkaline) Low for bright light and longer run time: 14,000 candela; 60 lumens; 237m beam distance; runs 13 hours (NiCd); runs 15 hours (alkaline)