After a quick USB recharge, the Thunderbolt is ready rock—delivering up to nine hours of illumination. And, with high and low beams, plus two different flash modes, you control how much shine to shed.
Crafted from lightweight, highly water-resistant silicone, your Thunderbolt bike light withstands any storm, and weighs only 50g. Thanks to the unique mounting straps, the Serfas LED light mounts just about anywhere—handlebars, stays, forks, racks, helmet—you name it. Best yet, Serfas offers the Thunderbolt Headlight with a Lifetime Warranty.