Serfas Seat Stay Taillight

While the light is specifically engineered for seat stays, the flexible silicone housing and removable straps allow it to fit on various frame tubes, such as the seat post or fork, provided the diameter is compatible with the strap length.

The upgraded silicone housing is designed to handle wet weather and road spray effectively. While it is water-resistant and durable enough for typical commuting conditions, it is not intended for submersion.

Yes, the straps are designed for quick, tool-free removal. You can easily detach the light from your bike frame in seconds when you need to secure your bike or swap the unit between different bicycles.

The 100-hour runtime is typically measured using the most efficient mode, such as a flashing pattern. Expect significantly shorter runtimes if you consistently use the light on its highest, constant-on output setting.

The flexible silicone body is quite adaptable, but it works best on standard round tubing. If your bike has highly specialized, non-round aero stays, the fit may be less secure than on a traditional frame.