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Serfas ULSA-8 Orion Blast Front Bike Light

sku# 149505
Serfas - ULSA-8 Orion Blast Front Bike Light
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Product Info

You're a mile from home, unsure of how much juice your bike light has left. It's an uncomfortable situation, and one that the Serfas ULSA-8 Orion Blast Front Bike Light aims to solve. On top of a crazy amount of candlepower blasting from its small size, this light has a tiny speaker to send you a warning that you have ten minutes left at your current level. The choice is now yours: switch to a lower lighting setting for some more time, or put the hammer down and race home. We'd suggest the latter.

Product Details


300 Lumens

42 Micro LEDs


USB Rechargeable Li-Polymer Battery


Solid ModesHigh (200 Lumens): 1 hr runtime, Medium (100 Lumens): 2.25 hrs & Low (60 Lumens): 3.5 hrs

Flash ModesHigh Rapid (300 Lumens): 6.25 hrs runtime, High Slow (300 Lumens): 12 hrs & Low (60 Lumens): 28.5 hrs


Aero-BracketSerfas's new Aero-Bracket fits almost any post or application on a bike, letting you put your light where you want it.

Additional Features

"Blast" Audible Warning System (AWS)When the battery reaches 10 minutes of runtime, in its current mode, the light will emit a long beep followed immediately by a short beep. Sound will continue every minute.


  • Biking Type: Urban/Commuter
  • Light Output (lm): 300
  • Weight (g): 55
  • Rechargeable: Yes
  • Warranty: Limited Lifetime



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