The comet front features a 1 piece cob led that generates 100 lumens of light this innovative light delivers a type of light that is really visible technical details 1 pce cob high brightness led 100 lumen output internal li ion battery usb rechargeable 2 hour usb charge time full beam 3 hours low beam 7 hours features usb rechargeable flashing constant modes low battery indicator auto charge cut off side visibility includes seat post and saddle mount brackets horizontal vertical mounting