Rolex running in period..true or false?

[mike]

Originally Posted by JPP

A running in period is a fallacy - no such thing. The watch may adjust to how you wear it but there is no "running in". It's a total myth. Any watchmaker should tell you the same thing. The movement will be affected in tiny ways by the way you wear it but this is throughout it's lifetime not just in the first few weeks of use. Oils and such like make no difference at all unless your watch is extremely old.

Well said. That's been my experience. Several watchmakers I have a lot of respect for call this the "myth that won't die".