The Phenix 180 is a mechanical watch movement with a pin lever escapement, a ratchet on the dial side, and a crown mechanism with a rocker bar. It is part of a series of movements that include minor variations such as 051/0a, 051/0b, 051/0c, 051/0d, 051/0de, 051/0df, 051/0e, and 051/0f. The movement offers functions like manual winding and a sub-second hand. It was commonly used around the period of 1955.