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Serfas Thunderbolt USB Taillight, White
The industry's most technologically advanced safety lights
All lights are robs compliant and all testing is done in house
More efficient leds & high quality lenses to increase brightness & Clarity
Produces 35 lumens of pure red light
USB rechargeable light, that fully charges in 3.5 hours
Features 30-mini LED strip
Features a water resistant silicone body and unique mounting options
Modes: high beam, low beam and two flash modes Run times: 1.75 hours (high beam); 3 hours (low beam); 7 hours (high blink); 9.5 hours (low blink)
Wherever your road leads we know cyclists seek the ultimate ride. With that in mind, Serfas is always striving to make products that reflect those wants and needs. Our 20-plus year commitment to quality, performance and customer service is reflected in our innovative products that are rider-tested and rider approved.