Serfas' TL-200 LED is an amazing taillight. It's super bright thanks to its twin-beam 1-watt LEDs that will keep you riding safe no matter how dark it gets. It features steady, flashing and rolling modes with up to 80 hours of run time from the two included AAA batteries.
Run time: 22 hours (Steady) / 80 hours (Flashing) / 80 hours (Alternating Flash)
Includes 2 AAA batteries