The Universal Geneve 505 watch movement was produced between 1937 and 1970, with over 3.5 million units manufactured during this time period. It incorporated various chronograph mechanisms, and due to the interchangeability of parts, series occasionally featured components from different calibers. The movement features a manual-wind chronograph function with a 60-second, 30-minute, and 12-hour duration, all switched by a cam. Additionally, it includes a sub-second display.