I know, right? But having started to get a real hankering for the Flightmaster / Z33, I've started to look at this watch's thickness in a new light.
I believe it's a modified base movement that started off as a 7750, with a unique-to-Longines module on top that provides the 4x retrograde hands, moon phase and am/pm.
I've been wanting a watch that combines both GMT and Moonphase as a more "all singing / dancing" watch to go along side my Speedy MkII and Citizen Altichron. This also includes the annual calendar, and does so with some fancy retrograde hands and a retrograde small seconds!
It kinda feels like it can be let off being thick, given everything it does!