So...as a point of watch history...the term "Compax" as used by Universal Geneve refers to the number of complications. Thus, the legendary "Tri-Compax" - which actually has 4 subdials - has three complications - chronograph, calendar (day-month-date), and moonphase. The "Bi-Compax" - which has 3 subdials - has two complications - chronograph and date. The watch you are showing would have been referred to as a 'Compax" or a "Uni-Compax" by the house which originated the Compax name. That said, the term is misused so widely to refer to the number of subdials that this has become standard in the watch collecting world. Too bad in a way that the historical usage has been lost .







