65 Lumens for visibility from over 2km day or night;Be seen with balanced optics designed for 270 degree visibility near and far;Two day-time visibility modes and two night modes;Day modes: 65LM flash-5.75hrs, 35LM all-day-10hrs, 25LM steady-4.5hrs;Night modes: 65LM flash-23hrs, 5LM steady-21hrs;Battery save mode at 5% life helps ensure a safe ride home with depleted battery;Quick connect bracket with 16 degree offset compensates for seatpost angle;Includes Quick Connect bracket and USB charging cable;