Fenix HP30 900 Lumen CREE XM-L2 LED Headlamp with Four EdisonBright CR123A Lithium batteries Max 900 lumen output using Cree XM-L2 LED with a lifespan of 50,000 hours Uses two 18650 batteries or four CR123A batteries Detachable diffuser lens Battery box USB port stands ready to power critical navigation and communication devices. Four EdisonBright CR123A Lithium batteries included in bundle.