Serfas TBT-50R Thunderbolt 2.0 (50 Lumens) Bike Accessories_Chains the Verza Speed 50 ensures

the Verza Speed 50 ensures smooth and reliable shifting performance

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Low Flash (10 Lumens): 13 hrs

R: FORK RAKE

Serfas TBT-50R Thunderbolt 2.0 (50 Lumens) Bike Accessories_Chains the Verza Speed 50 ensuresFeatures: Super Bright (50 Lumens) *Daytime Flash Auto Safe Mode Last Mode Memory USB Remote Switch Compatible Aero Post Compatible USB Rechargeable Specs: Solid Modes: High (25 Lumens): 1. 5 hrs, Medium (15 Lumens): 2. 25 hrs, Low (10 Lumens): 5. 5 hrs Flash Modes: *Daytime Flash (50 Lumens): 19. 5 hrs, High Flash Slow (25 Lumens): 9. 5 hrs, High Flash Fast (25 Lumens): 5 hrs, Low Flash (10 Lumens): 13 hrs, Auto Safe Mode Extends Runtime an