65 lumens for visibility from over 2 km 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: 65 lm flash-5.75 hrs, 35 lm all-day-10 hrs, 25 lm steady-4.5 hrs;Night modes: 65 lm flash-23 hrs, 5 lm steady-21 hrs;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 USB charging cable;