Bontrager Flare R City Rear Bike Light > 35 lumens provide visibility from over 400 m day or night > Wide visibility angle intended for city use > Two day-time visibility modes and two night modes > Day flash 35 lm-8 hrs, night flash 35 lm-16 hrs, day steady 20 lm-3 hrs, night steady 2 lm-20 hrs > An integrated light sensor for auto-brightness control > Battery save mode at 5% life helps to ensure a safe ride home with a depleted battery > The Quick connect bracket with 16-degree offset compensates for the seatpost angle > Includes a Quick connect bracket and micro USB charging cable