The Felsa 415 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 Felsa 415 include an adjustable stud holder, automatic transmission wheel running on ruby studs, Incabloc shock protection, and a calendar with quickset functionality.