Chronometer (aka yacomino)
42120
Actually after checking my 372 and 662 don’t hack, but my 422 does. However for the 422 the second hand is not sync with the … seconds. Not sure what that means but this is what the panerai service center told me when they regulated it
So this mean the minutes hand can track perfectly to the atomic clock but the second hand indicator can be off by 20 second …as if the second indicator is not tied to the main movement