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http://download.cnet.com/10000-Year-Hijri-Calendar/3000-2072_4-10637935.html

The movement in the F-43 Triple-GMT is called the WERK 13, and it's a true link GMT movement in the sense that it features jumping hours, which allows the wearer to easily set the local time and cycle through the date indicator at any time. The caliber also has a 70-hour power reserve. Spec-wise, the watch stacks up against some of the link heavy-hitting GMT models from the brands Mr. Philipp link outlined when he shared his vision for the "new" Fortis.

The time is shown using a type of complication link known as link "wandering hours." The hour is shown on a numeral mounted on a hidden satellite carrier and over the course of an hour the satellite moves across an arc on which the minutes are shown. The complication dates back to the mid-17th century at least when in 1656 the clockmaker Campanus brothers made the first known wandering hours clock link for Pope Alexander XII.