Buy the way, I am a bit disappointed with this watch's regulation. It regularly loses 7 seconds per day, so it is going back to the AD. I cannot stand any watch that loses time and 7 seconds is well outside Rolex's claim for "Superlative Chronometer" of +/- 2 seconds per day. I checked all its positions on my Timegrapher and each shows a loss with average beat error of 0.22 m/s and average amplitude of 279º (a bit low I think). Anyway I shall see next week.
Best
Clive