Hi,
so before Mike00 writes it; YES, I played with the buttons!
I visited the local IWC dealer who showed be some models (see below)! I tried them on and on the chronograph one I started and stopped the chrono several times. And what happend... I pressed the start/stop button @2... no reaction, I pressed harder and then I heard a very slight "ping" noise?! After that it then only reset at 1 min before 12... and did not run anymore.
And the dealer said... "hmmm, guess I have to send it back"!
Lucky me, it was a cheap one anyay; only 21.000 Euros!
Suddenly I had the urge to say, happens with reps as well, but then thought, better not say that!
Dutchy
P.S. Pics before I broke it! Maybe it broke as the date was changing!?