My first dabble in 3d design.
I wanted a watch that is easily customizable and that can be used as a base for different designs.
Watch is based around chronograph  Sunon pe50 caliber, but I plan to use it for simpler sl68 movements.

2 case models are provided: with and without movement cavity, for you to customize it to your own movements

Sunon pe50 is what I had and I did not want date and chronograph functionality, thus there are no buttons.

Strap size is 24 mm
Glass size is around 35.5 to 36 mm, 1 mm thickness

I used acrylic, since it is cheaper and easier to adapt.
2 designs of the back cover
Multiple dial options with a messy one I like

Printer settings recommendations: 
Layer height 0.1 mm (I did not test other heights, but they should work)
For chrono dials use 0.1 mm on the first layer
Supports are only necessary for the case
And since there are curved inside overhangs, slow down your print speed and you could increase  print temps to aid layer bonding,
otherwise it is pretty straightforward.

Please share your printed results and have fun with it!