[KY..]

Aside from what’s been stated, the photos are blurred and hard to see details.
Looks like something is going on with the dial having bubbles.
Please provide much clearer photos of all of the watch including the numbers between both lugs and the movement.
You may need to visit a qualified, not a random mall kiosk, watchmaker to get help with removing the case back.
Post better pics here and go from there.
Good luck!