The Serfas Thunderbolt USB Rear 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' severaldifferent rear facing mounting options.
The 30 micro-LED strip will let your presence be known tocars and other bikes alike. With 8 different color options, your bike will definitely find its match.
Charge it up, light up and get riding safely with the Thunderbolt.