Fenix LD01 72 Lumen Cree LED keychain Flashlight with 3 X EdisonBright AAA batteries bundle Fenix LD01 Most popular EDC/Keychain light in its class 72 Lumen max with Cree XP-E R4 LED with a lifespan of 50,000 hours Uses one 1.5V AAA(Ni-MH, Alkaline) battery Digitally regulated output - maintains constant brightness Bundle includes 3 X EdisonBright AAA Alkaline batteries