Facebook user selling it for cheap. Makes me wary for sure and something looks off on the dial. Like a cheap 80's Fomega.
The word "QUARTZ" Not Omega's finest hour, but it is 99% genuine IMO. Better pics would be conclusive.
You might also want to have a look at this https://omegaforums.net/threads/vintage-omega-posting-guide.383/
Nothing wrong with Quartz chaps, although I would air with Jim on this one, not Omegas first hour and very much in the midst of the dark days for the them
lets wait if our resident battery-power expert, Mr. squirrel can put his seal of approval on it... dont buy any Qu. without his consent...