Yes, it’s not in-house but it is a milestone in mass-produced chrono movements and helped many watch brands survive the quartz onslaught. Furthermore, it is tough as nails, can be regulated to COSC precision level and was designed with simplicity in mind....
I appreciate your feedback(s) . The Valjoux movements deserve a place in horological history! Look what’s in the PN Daytonas, not to mention what’s in other watch brands