The Dugena 2121 is a vintage Swiss made automatic movement, belonging to the ETA 2800 series. Introduced in the 1970s, it is a cost-effective alternative to the widely used ETA 2824-2 movement. While there are differences in components, the dial feet positions remain consistent with other ETA calibers. The Dugena 2121 offers central hour, minute, and sweeping second hands, and has an optional hack feature and stop seconds function. Produced around 1980, this movement also features an Adjustable Stud Holder.