Serfas Thunder Blast USB Rear Light

Serfas Thunder Blast audible warning system alerts rider of low battery while providing a bright, USB rechargeable rear light in either a constant or flashing mode. Long straps that will fit almost any post, handlebar or mounting application on a bike.

• Lumen
  • 40 Lumens on High
  • 10 Lumens on Low
• Run Time
  • Solid Modes: High 2 hours, Low 7.75 hours
  • Flash Modes: High 3.5 hours, Low 14.5 hours
• Charge Time
  • 4 Hours by USB Charger
• Battery
  • USB rechargeable Li-Polymer
• Details
  • 85 Decibel audible warning system alerts rider of low battery with 10 minutes of power remain in specific mode
• Weight
  • 48g without bracket
• Includes
  • Mounting straps
  • USB charging cord