Serfas USL-155
  • 155 claimed lumens
  • 2h 30min reported battery life
  • 116 g
  • flashing mode
  • no pulse mode
  • 3 brightness levels
  • internal Lithium batteries
  • low battery indicator
  • micro usb rechargeable
  • Included mounts: Strap
  • Optional mounts: Helmet

Serfas' USL series bike safety lights are primarily designed for being seen. Although not as bright as the high-powered TSL series lights, these lights are good for adding visibility to your bike when riding at night on lit roads. The 2015 product lineup will introduce several new high-power commuter headlights to the USL series.

The USL-105 is part of Serfas's redesigned commuter headlight line to be available in 2015. The light features side visibility ports, a lower weight than Serfas' previous lights, and fast USB charging capability.