See and be seen with Serfas' USL-R USB Taillight. It has steady and flashing modes, runs for up to 6.5 hours, has a quarter-mile visibility and is easy to install and remove thanks to the built-in universal quick-release rubber strap. Recharging the light's battery is simple and convenient, too. When the battery indicator tells you it's time, just plug the light into your computer's USB port.
Run time: up to 6.5 hours
Integrated USB plug for easy charging
USL-R USB Taillight