EdisonBright Fenix E25UE 1000 Lumen Ultimate Edition CREE XP-L LED Flashlight with two AA batteries Max 1000 Lumen Uses Cree XP-L V5 LED with a lifespan of 50,000 hours Powered by two 14500 rechargeable Li-ion batteries or two AA (Ni-MH/Alkaline) batteries Intelligent drive circuit automatically determines output levels depending on battery used Digitally regulated output maintains constant brightness Bundled with two EdisonBright AA Alkaline batteries