And while we're on the topic of watches here's a a random article from The Quarterly Watches looking at the prop watch that was used in the film - a Jaeger-LeCoultre - apparently. I've zoomed in but the text is still very small and hard to read.
I'm not sure what they are on about with the flipping mechanism. I guess that wasn't featured in the film and is only part of the promotional ones they made for the film release. I've got to say it's really great that they went to the extra effort of illustrating the scene from the film for this spread.