Provide extra protection for your watch if the overall look of the watch is not so important for you. Or you can use it in special occasions.
I use 37mm Glass Screen protector.

The design can be changed for a perfect fit.

There is no hole for the microphone, because I dont use it. I can make one in the design, or just dril it with a 2-3mm drill bit.

Notes:

Layer height 0.1 or less

Edit 13.03.2023

For this model, with 0.4 Nozzle, I recomend the Classic Perimeter Generator, not Arachne.

The Fusion360 files are also here.