Audemars Piguet Royal Oak Chronograph White Gold — Sapphire-Set Bezel Blue Dial | Ref. 26240BC.SS.1320BC.01

The Royal Oak Chronograph has long served as the collection's most dynamic expression — a piece that layers genuine sports timing functionality atop Genta's foundational architecture with complete compositional integrity. Reference 26240BC.SS.1320BC.01 takes this already compelling formula and renders it in 18-carat white gold, appointing the octagonal bezel with baguette-cut blue sapphires that mirror the colour of the Grande Tapisserie dial below in a chromatic dialogue of rare sophistication.

The movement is Calibre 4401, Audemars Piguet's entirely in-house flyback chronograph calibre — a landmark achievement in manufacture independence, operating at 36,000 vph for exceptional timing precision with a column wheel and vertical clutch architecture ensuring smooth, backlash-free chronograph engagement. With a 70-hour power reserve, this calibre sets a new performance benchmark in the Royal Oak Chronograph family. The integrated column-wheel mechanism is partially visible through the sapphire caseback, revealing the calibre's architecture in its full decorated detail.

The blue Grande Tapisserie dial organises the chronograph sub-dials — elapsed minutes at 9, running seconds at 6, and hours at 12 — with the graphic clarity that has always distinguished the Royal Oak Chronograph layout. The screw-locked crown and 50 metres of water resistance round out the functional specification, while the integrated white gold bracelet with AP folding clasp provides effortless wrist presence. Presented with box and papers at $269,999, the 26240BC.SS is the definitive intersection of chronograph mechanics, precious metal craftsmanship, and gemological ambition within the Royal Oak family.