The ETA 2525 watch movement, produced from 1975 to 1978, incorporates an integrated automatic gear within the movement itself, departing from the conventional approach of attaching it to a manual-wind calibre. This innovative design allows for the inclusion of indirectly driven minute and second hands while maintaining a robust rotor bearing in the center space. Notably, this movement offers various functions, including automatic winding, sweep seconds, day and date display, and a stop seconds feature. The day and date can be quickly adjusted, and the movement supports a hack feature.