When the "star track pointer" moves on an arc-shaped or special-shaped scale, for example, from a short radius area to a long radius area, the transmission mechanism drives the pointer to automatically extend and adapt; when it returns to the short radius area, it shortens and fits the scale accurately, making the time clear and creating the dynamic beauty of the star track.The fusion of astronomical star track romance and mechanical precision is an ingenious presentation of technology and art on the watch, adding a unique sci-fi and artistic atmosphere to the watch.