Cambria Bicycle Outfitters Since 1986

Serfas USL-1 USB Front Light

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sku: 118378

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Serfas USL-1 USB Front Light

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. 


  • Light charges in 3.5 hours on most computers; solid blue light indicates when charge is complete
  • LED bulb is nearly indestructible and greatly extends battery life
  • Light runs for 6.5 hrs. in flashing mode, 4 hrs. on low and 2.5 hrs. on high
  • Quck-release bracket means easy on and off your bike handlebar


  • 12claimed lumens
  • 2h 45minreported battery life
  • Be-seen
  • 21 g
  • flashing mode
  • no pulse mode
  • 2 brightness levels
  • internal Lithium batteries
  • micro usb rechargeable
  • Included mounts: Strap

Collections: Front Lights, Lights