I call this one "Metal Mania".
I've always found a watch mechanism to be more interesting than the case, so I hid the external components to reveal the movement.
For this interpretation I wanted to use various textures and colors having low specularity to focus on the metals and form.
This image is straight from KeyShot with no post.
Ed
Maybe the brush is a bit heavy on everything, as it all seems a little dull and flat. I think picking up highlights could be really nice on all those component with the right shader and environment.
Cheers!