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Serfas Thunderbolt 2.0

The rechargeable, band mounted, incredibly bright 50 lumen Thunderbolt light can be fastened almost anywhere on the rear of your bike: seatpost, seat stays, rear rack or rear basket.

With a flashing brightness up to 6x as visible as typical rear lights, the newest edition of the Thunderbolt also bumps the run time up to 19.5 hours on flash mode by using a new 500 mAh Lithium Polymer LG battery.

High and low solid modes are available as well with 1.5 and 5.5 hours of run time respectively.

Includes a seatpost mount and USB recharging cable. A rack mount is available separately.

Backed by Serfas' outstanding lifetime warranty.