I want to be as clear as possible, both watches are very good watches, the only thing is that the XF version is exactly the same as the genuine one. If you see the ZF you will not doubt that you are facing a Pelagos, but if you compare it carefully with an original you will see that there are slight differences and that does not happen with the XF with the exception of the ceramic markers on the dial, which have not been properly never replicated