Serfas Thunderbolt Headlight Front Bike Light USL-6

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 90 lumens of pure light

USB rechargeable light, that fully charges in 3.5 hours

Features 15-micro (double strength) LED strip

Features a water resistant silicone body and unique mounting options

Modes: high beam, low beam and two flash modes Run times: 1.5 hours (high beam); 6.5 hours (low beam); 3.5 hours (high blink); 9 hours (low blink)

Can be seen up to 1 mile away! 


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