USL1 USB MICRO HEADLGHT SLIM
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.

Specs

  • 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

Sizing Chart

Read about Bike Fitting and Sizing on our blog!

This is a rough guideline and we recommend everyone get fitted at their local bike shop. For a quick guesstimate measure your inseam to the floor and select the size with a standover height about 1"-2" shorter than your inseam. Or, you know, come visit us at the shop!

4’ 4’2 4’4 4’6 4’8 4’10 5’ 5’2 5’4 5’6 5’8 5’10 6’ 6’2 6’3 6’4+
43 CM
47 CM
50 CM
54 CM
58 CM
61 CM
64 CM