For the Aquascaphe GMT, the brand has chosen the Soprod C125, a Swiss, self-winding (read: automatic) movement with a power reserve of 42 hours, a date complication, and a GMT function. The closed caseback is engraved in what can only be
link described as a world-time layout, with country names circumventing the outer part of the caseback and a map of the world situated in the center.