The ETA 2790-1 watch movement features a detached manual wind escapement and barrel. It includes a self-winding gear with direction switching facilitated by a pinion floating between two large jewels. The movement incorporates a ratchet on the dial side and a crown mechanism with a rocker bar. Notable functions of the movement include automatic winding and an adjustable stud holder. The ETA 2790-1 movement was primarily used around 1970.