If you want a full size ie the same as the Moonwatch in look then the 3303 or 3313 movement Broad Arrow models are exactly the same thickness as the manual wind equivalent. From memory around 13mm. The Reduced model using the compound movement is likely thinner but that is a very different watch. I doubt the 7750 based models such as the Date and Triple date are particularly thin, that movement is very fat. If thinness is what you desire I would steer clear of the recent two register ‘57 and Racing models. Those are very thick at around 16mm+