The Eterna 1412UD watch movement is equipped with a jewel bearing for the barrel, enabling smooth and efficient rotation. Its indirectly driven minute hand allows for a large balance and a low-profile design. This automatic movement features a sweep second hand, and offers day and date functions. The day can be set by adjusting +/- 24 hours, while the date can be quickly adjusted by repeatedly pushing the crown. The movement was primarily utilized around the year 1971.