TBT-120F Thunderbolt 2.0 (120 Lumens)


Extremely Bright For It’s Compact Size

CNC and Precision Laser Etched Aluminum Housing Component

120 Lumen Output On Daytime Flash – 7 Lighting Modes

Auto Safe Mode Adjusts Output To Maximize Battery When Low

Last Mode Memory

USB Rechargeable

SKU: TBT-120F / 713835033616 Categories: , , Tags: ,

In stock (can be backordered)

Thunderbolt 2.0 User Manual


Limited Lifetime Warranty
Serfas® warrants to the original purchaser that the product is free of defects in material, construction, and/or workmanship for the lifetime of the product.

Battery Warranty – One Year Coverage
Serfas® batteries are covered by a 1 year warranty from the original date of purchase.

The Serfas True Series light line was developed to be the best on the market. Given the True stamp of approval, these headlights will meet and exceed their expected lumen output while offering you all the features you’ve come to enjoy from Serfas lighting. Please welcome the new line of True Series lights, and be prepared to turn night into day.


  • Super Bright (120 Lumens) *Daytime Flash
  • Last Mode Memory
  • Auto Safe Mode
  • USB Remote Switch Compatible
  • USB Rechargeable
  • Up to 23hrs Runtime
  • Aero Bracket Compatible


  • Solid Modes:
    • High (60 Lumens): 1.5 hrs
    • Medium (40 Lumens): 2.5 hrs
    • Low (20 Lumens): 5.5 hrs
  • Flash Modes:
    • Daytime Flash (120 Lumens): 23 hrs
    • High Flash Slow (60 Lumens): 12 hrs
    • High Flash Fast (60 Lumens): 7.5 hrs
    • Low Flash (25 Lumens): 18.5 hr
    • *Auto Safe Mode Extends Runtime an Additional 45 Minutes
  • Weight: 40 Grams with Bracket
  • User Replaceable Battery: Lithium Polymer, 500 mAh



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