How does Omega tell the truth from the false?

Personal suggestion, for reference only:

1, the number on the back of the case is generally the product number, which is unique. If it is Swiss original, you can enjoy the global warranty if you buy it through formal channels.

2. official website inquiry:

You can use the unique number of the watch to enter and view the model and function of the watch.

According to my personal experience and understanding, Omega doesn't seem to have this watch. I didn't mean to hurt you. As far as I know, there are many world-famous watch factories in Hong Kong and Taiwan, which may be imitations or knockoffs.

Whether it is true or not, thank your friend for having this intention. Just like yourself!

Good luck!