this is still a alpha-version
All the necessary settings are already made in the .3mf files. You just have to assign the right tools. All files are for 0.4 mm nozzles.
you need a printer that is capable of printing with TPU and PLA in one print (e.g. Prusa XL with more than one toolhead)
I will try to add all information for the watch this year.
you can find some usefull information on parts needed and how to assembly it at the successor sides:
https://www.printables.com/model/8557-3d-printed-watch
https://www.printschnitzel.at/3d-printed-watch
The author marked this model as their own original creation.