The ETA 2824-2 watch movement was produced during the period of 1966-1970. It features an indirectly driven minute and automatic gear integrated into the movement, enabling a low profile design. The movement includes a ratchet on the dial side and a crown mechanism with a rocker bar. Furthermore, it incorporates a rather small rotor ball bearing. Details regarding the differences between the 387 and 389 models are not available. The ETA 2824-2 movement includes functions such as automatic winding, sweep seconds, quickset date, and is meant to be used for a specific period from 1966-1970.