Great value light set including a SL-150 front light with a 150 Lumen output, the front lens provides side visibility for additional safety, with both solid and flash modes and up to 85hr’s run time on AA powered batteries (included) universal mounting bracket works on any handlebar diameters. The TL-415 rear flasher light offers 500 yards of visibility through 3 red LED lights, powered by AAA batteries (included) for up to 200 hours of run time, built in backpack clip adds additional mounting options.