Designed to be used in the daytime or night the Daybot features a CREE LED to power a 100 lumen for daytime modes 2 Day Modes (runtime): Solid 60 lumens (6 hours), Pulse - 100 lumens (20 hours) 3 Night Modes (runtime): Solid 20 lumens (20 hours), Flash - 20 lumens (100 hours), Pulse - 20 lumens (30 hours) USB rechargeable lipolymer battery Includes brackets for seatpost and seatstay mounting and USB recharging cord Third party online retail sales prohibited