The Serfas Thunderbolt tail light is freaking awesome! It definitely has a "wow" factor the first time it is turned on.
Serfas Thunderbolt (UTL-6) Taillight gives you style and safety in one high-powered and affordable package.
Being seen on your bike at night never looked so good with Serfas' Thunderbolt (UTL-6) Taillight. This USB rechargeable gem comes with 35 lumens of firepower while giving riders' several different rear facing mounting options.
The 30 micro-LED strip will let your presence be known to cars and bikes alike. And with 7 different color options, your bike will definitely find its match.
Charge up, light up and get riding safely with the Thunderbolt.