The watch needs to lie relatively close to the ellipse otherwise it can spin and fall if the watch is heavy and has no leather. Or glue something with grip on the top.
Versions:

1. Watch Stand
2. Watch Stand ( no font)
   Both have a circle of ~147mm
3. Watch Stand Big
4. Watch Stand Big (no font)
   Both have a circle of ~152mm

Measure the size of the inner circle of your watch and take what fits the most.

Creality

CR-10

No

No

~25%

Turn this model to left and you won't need support