EdisonBright Fenix HL35 450 Lumen LED Headlamp with 4X AA batteries including 2 X AA Alkaline batteries bundle Max 450 Lumens utilizes Cree XP-G2 R5 Neutral White LED with a lifespan of 50,000 hours Powered by two AA (Ni-MH/Alkaline) or 14500 Li-ion batteries Digitally regulated output maintains constant brightness Reverse polarity protection to protect from improper battery installation This bundle includes 4X AA batteries including two EdisonBright AA Alkaline batteries