The Meteor-X Auto USB Rechargeable front bike light combines a compact chassis with superior light output making it ideal for every day commuting whatever route you take day or night. The Meteor-X Auto front generates up to 450 lumens of light from its 1 Cree XML U2 LED. A built in safety mode means that once the USB rechargeable battery level falls below predefined level, this selects the brightest mode that guarantees 1 hour run time to get you home.