Calendar types in watches

As much as I will most likely never spend 6 figures on a watch, I greatly appreciate their engineering. Tangential, does anyone know how easy is it to design and build your own movement?

I don't know about the difficulty, but you can look at the complexity of this ETA 6497 movement on GrabCAD [0]. After seeing this a while ago, it made sense to me why small/new brands generally use a Seiko NH35 or something similar that they can buy in bulk.

[0] https://grabcad.com/library/eta-6497-1-complete-watch-moveme...

> As much as I will most likely never spend 6 figures on a watch, I greatly appreciate their engineering.

How about in the US$ 9000 range? Frederique Constant Manufacture Slimline Perpetual Calendar:

* https://www.chrono24.com/frederiqueconstant/manufacture-slim...

(Perhaps as a gift to yourself for a major milestone: 50th birthday, retirement, etc.)

Thanks for the suggestion, certainly possible I think. Honestly it depends a lot on how my career/income turns out, but the watch looks good!

Thanks a lot! Sounds like reverse engineering a complicated (heh) watch movement could be a fun challenge to start with!