Fossil watch battery cover removal tool

Here is a 3d-printable tool to unscrew the battery cover of your Fossil watch.

It is designed for watches with a 39mm cover diameter.

It's made of 2 parts. I originally thought only one would be necessary.
But torque on my watch was too high, so i had to design a handle to make it work.

I suggest you print the ring first, and then the handle, if necessary.

Your comments are welcome.