Should the watch only Omega or other brands as well?
It's a Chronomatic Group caliber. Since it's SWISS instead of SWISS MADE it might be a Hamilton. although Autavias had that black & orange coloring. Probably an 11, 12, 14 or 15 if it's automatic, and a Valjoux 77xx if manual. The bezel is a good clue too.
Should the watch only Omega or other brands as well?
Wavy dial - originally thought it's a 2254 or some similar SMP but they have sword hands.
Don't forget it is a macro. The hand you can see is HALF of the skeletonised hand of an SMP 300 Bond. 😀