The most important thing about the caliber 1869 is that it’s manually wound. Yes, this a return to good old-fashioned Speedmaster goodness right here, but there’s a lot more to this move than just the nostalgia factor. First off, you get the dial layout I mentioned above, which is beautifully balanced, more familiar to most people, and date-less (which I know you all love so much). More importantly though, it makes for a slimmer watch. By swapping out the automatic movement and the pair of box crystals, Omega has shaved 2.5mm off the thickness, bringing it in at just 13.8mm thick.