Serfas UTL-6 Thunderbolt Tail Light 35 Lumens
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Begone batteries!!!! Rechargeable and generator powered lights are here to stay. Serfas has been ahead of the curve for a while now making all kinds of usb rechargeable lights. I like the thunderbolt for it's simple silicone strap design that makes it easy for on and off as much as it's BLINDINGLY bright MICRO LED (I don't even know what that means!!) beam.