SON hub dynamos
Hub dynamos are already widely available and offer several advantages in comparison to other types of power generation at the bike. Even road and mountain bikers use these light systems. SON's hub dynamos are products that are suited also for outstanding requirements, even water is no longer a problem due to a sophisticated pressure equalization system, which is built into all SONs. SON builds its models in a weight-saving design and provides a long life of the bearing.