Omega Watches - Recent Questions, Troubleshooting & Support

different watches have different case backs. You need to send a picture with yours or send the model number so we can see what is the case back system. Omega has many vintage ladies models.

Omega puts out a video manual that you can view: OMEGA Seamaster Diver 300M Calibre 2500 2507 Video Manual

There are several easy to follow tutorials on u-tube. It's easier for you to look at these than for me to describe how it is done. Just search "adjusting steel watch straps"

it is still under warranty contact the ,manufacturer customer service and ask how to get a refund for the faulty item under warranty

Did you get water on it? Does it need a new battery?

Please contact a local jeweler for this type of repair. Fixya does not sell parts or have anyway to look them up for any product, sorry.