The ETA caliber 2878 is a Swiss made automatic movement that was introduced in the 1970s. It is related to the ETA 2800 series of movements and shares the dial feet positions with other ETA calibers. The movement features a bi-lingual day/date complication that can be quickset, with an instantaneous changeover at 12:00 AM. It also has a sweep seconds hand and offers a hack feature as an option. Additionally, the movement includes central hours, central minutes, and a central sweeping seconds hand. The day/date display is positioned at 3 o'clock.