Fenix E20 2015 265 Lumen XP-E2 LED motion control tactical Flashlight with Two EdisonBright AA Alkaline batteries Max 265 Lumen using Cree XP-E2 LED with a lifespan of 50,000 hours Uses two AA (Ni-MH, Alkaline) batteries 160mm (Length) x 26mm (Diameter) Tilt/Shake brightness control feature Bundle comes with 4 AA batteries including 2 EdisonBright AA Alkaline batteries.