Laurent has provided some nice comparison photos for you Christoph, but if it helps too, I have found the automatic Carrera to be perfectly adequately sized on my 19.5 cm wrist. I fact, I find it pretty well perfectly balanced and sized, though I never bought into the trend for oversized watches.

If you're still worried, see if you can find a dealer nearby who will let you try one on without committing to buy - size of a watch is a very personal thing and what suits one person might not suit another.