The new Serfeas Thunderbolt belongs to the True Series line of light that Serfas has recently launched, which aims to being the best on the market. They were designed to meet and exceed their expected lumen output. It lights up to 50 lumen and gives you up to 13 hrs of runtime.
Super Bright (50 Lumens) *Daytime Flash
Auto Safe Mode
Last Mode Memory
USB Remote Switch Compatible
Aero Post Compatible
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
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