The aim of the invention is to convert the mechanical energy generated by the cyclist into electrical energy by means of the generator and battery inside the body, which will preferably be placed on the rear wheel of the bicycle, and this energy is used in a way to increase the visibility for the safety of the bicycle.With this invention, excess energy can be stored and used as a power source, and charging of electronical devices is also included. The invention also contains at least one USB port located on the body. In this way, it is ensured that electronic devices are connected to the battery via this USB port and act as a power source.