FRONT LIGHT Up to 300 lumens light output 1 x CREE XPG LED Tool free quick release bracket Constant & flashing modes Water resistant Horizontally adjustable Low battery indicator 3.7V Lithium Ion battery USB (Universal Serial Bus) & Main rechargeable Up to 15 hours runtime 3 hours charge time REAR LIGHT: Up to 60 lumens light output 1 x CREE XPG LED Tool free quick release bracket Constant & flashing modes Water resistant Vertically adjustable Low battery indicator 3.7V lithium polymer battery USB (Universal Serial Bus) rechargeable Up to 6 hours run time 2 hours charge time