Serfas Thunderbolt (UTL-6) Taillight gives you style and safety in one high-powered and affordable package.
Features a light silicone body
Features 30 micro-LED strip
Modes: 1.5 hours (high steady); 2.5 hours (low steady); 4 hours (high flash); 7.5 hours (low flash)
Unique mounting system that allows for endless mounting possibilities
Highly Water resistant
Weight: 50 grams