Patek Philippe’s contribution to this year’s Watches and Wonders show culminated with a new version of the Grandmaster Chime. Sporting a two-tone precious metal case — white and rose gold distinguish the watch’s look generally — the watch’s most compelling feature is its mechanical complexity.

The Grandmaster Chime design isn’t quite a decade old. Its twenty complications include a date repeater and alarm, as well as minute repeater; additional complications include grande and petite sonnerie. The new iteration is built around a caliber 300 GS AL 36-750 QIS FUS IRM manually wound movement. Its patented reversible case is a distinguishing feature of the Grandmaster Chime series; the plates are 18K gold.

The mechanical dazzle of the watch is matched by Patek Philippe’s signature sense of style, a glossy traditionalism that’s timelessly classy and, in this case, capped by brown opaline. The Grandmaster Chime in rose and white gold is enhanced by its hand-guilloched and Breguet visuals.

The new Patek Grandmaster Chime is finished with an alligator and gold strap in a sympathetic shade of chestnut.