Fenix LD11 300 Lumen LED Tactical Flashlight with EdisonBright AA Alkaline battery 300 lumens max using Cree XP-G2 R5 white light LED with a lifespan of 50,000 hours Powered by one 14500 rechargeable Li-ion battery or one AA battery Push-button tail cap switch for output selection Digitally regulated output maintains constant brightness Bundle includes EdisonBright AA Alkaline battery