Serious question...

It occurred that like with the Dato 45, you have a Heuer 02 movement but you only see one subdial... but presumably everything else is there underneath the dial and working. So is it possible that a part you can't actually see could 'break' and cause a problem with the movement?

As much as i want to put thoughts into it, I don't have the watch and the chance to obtain it in near future are close to zero.

So i am shutting down my brain...

Just kidding...

Nope i don't think so...Some other manufacturer did that with some movements as well (not fully using the function from the movement) and it was fine.

I think it will be fine. But that just my opinion. I hope there is contradict theory to further enlighten us on this matter.

This is a fascinating question. I don’t know the answer, but I’m trying to frame it in the context of another example. Say I have a chronograph. And say that one of the components of the chronograph doesn’t work — like the hours counter. So if I don’t use the chronograph function, does the main part of the movement responsible for telling the time not function as well? I think the answer depends on how the main drivetrain is coupled to the complication drivetrain.

And there you have it. My entirely uneducated, purely hypothetical useless two cents. 😁

At least ya got the two cents in. I harbor these thoughts as well. And you ain't uneducated!

We know that the Calibre Heuer 02 is an integrated movement with a central rotor and a vertical clutch. It also has fewer parts than the Calibre Heuer 01 (1887) which in theory, “less moving parts, more reliable” and I know that the Heuer 01 is a fine example of a great chronograph movement 👍

**edited thanks sir @Jim Dollares

We’ve seen the Calibre Heuer 02 take on 3 subdials, 2 subdials, and now 1 subdial 😲 date placement can also be different! We’ve also seen it in the 39mm, 42mm and 44mm case on top of that a 45mm tourbillon! It’s versatile as it can get 😉 I love my Calibre 1887 / Heuer 01 movement and I disagree that it was shelved by TAG Heuer. 😡 My 0.02 😁

The H02 is an integrated chronograph movement, not modular?

Yes, sorry about that my bad. It’s not modular but has the capability like one 😉 meaning easily modifiable. That’s what I meant 👍

“Though it is not a modular chronograph movement, it has been designed in a way that allows extensions to be added to the movement’s functionality.”

I had a chrome that one of the sub dials failed to function but everything else worked ok, Longines maybe? It was a while ago.

My guess is yes. I cant imagine that the Dato 45 would have a movement where they have heavily changed the architecture of the movement. The date window we have seen moved around on different models, maybe just a case of moving where you open the dial for the date window and adjusting the printing on the date disk to show the numbers in correct way depending on where you put the date window. Theoretically I guess that the running seconds and hour counter for the chronograph exist in the actual movement, just no sub dial or hands on the dial, so if a gear or something related to these would break I guess it could mess with the whole movement depending on the type of damage.

We have seen the H02 with date at 6, 9 and 12. Date disk in same place but opening on dial in different places to show the date. Superb drawing below to illustrate.




Would be interesting if someone who owns the Dato or the Skipperera could try to listen to the chronograph when it is running and listen for any sound every time the chronograph has run 30 minutes. Perhaps if listening closely, the click of the chronograph hour hand triggered to advance one step can be heard and thereby proven to exist without being seen?

The Skipperera has the Calibre 18 movement while the Dato “30” has the Calibre Heuer 02 👍 But it’s good to check and listen for any sound running past 30 minutes

Ah yes of course! Good we can correct each other bromigo 👍