The Certina 920-1 is a mechanical watch movement that was produced for a short period of time around 1970. It is part of a series of calibers that were later renamed as 160 through 167. The movement features a sweep second hand and an automatic winding system. It also includes a date function that can be quickly adjusted by repeatedly pulling and pushing the crown. Other notable features of the Certina 920-1 include an adjustable stud holder, automatic transmission wheel running on ruby studs, Incabloc shock protection, and a calendar with quickset functionality.