The Certina 19-45 is a manual wind watch movement that was developed in 1955. It features wheels made from beryllium bronze and is a detached movement. This particular movement had a limited production, suggesting it was only produced for a short period, possibly around a year. Despite its short lifespan, two variants of the manual wind gear and two balances were produced in parallel, indicating potential experimentation. Additionally, the movement includes functions such as automatic winding and sweep seconds. The Certina 19-45 movement was widely used during the approximate period of 1955.