Audemars Piguet Royal Oak Tourbillon 26730st.oo.1320st.05 Watch

The Audemars Piguet Royal Oak Tourbillon Extra-Thin 26730ST.OO.1320ST.05 is a masterclass in haute horlogerie — a timepiece that distils over five decades of Royal Oak iconography into one of the most technically demanding complications in fine watchmaking.

Housed in a 41mm stainless steel case, the watch retains the Royal Oak's signature octagonal bezel with its eight hexagonal screws, brushed and polished alternating surfaces, and integrated bracelet — a design language conceived by Gérald Genta in 1972 that remains as arresting today as it was revolutionary then. The case measures a remarkably slender profile, a testament to the movement architecture within.

At the heart of this piece beats the Calibre 2924, an in-house manual-winding flying tourbillon movement. The flying tourbillon — so named for the absence of an upper bridge, allowing the rotating cage to appear suspended in mid-air — completes one rotation every 60 seconds, continuously compensating for the effects of gravity on the escapement. The movement is finished to the exacting standards of the AP manufacture: bevelled and polished bridges, circular-grained mainplate, and hand-chamfered components throughout.

The dial presents in a rich Grande Tapisserie pattern — the hallmark hobnail guilloché that has defined the Royal Oak since its inception — executed here with exceptional depth and precision. Applied hour markers and the Royal Oak hands are rhodium-plated, lending a cool, restrained luminosity against the dial's texture. The flying tourbillon cage is positioned at 6 o'clock, framed by the dial's geometry with deliberate, architectural intent.

Completed on a stainless steel integrated bracelet with AP's signature folding clasp, the 26730ST.OO.1320ST.05 is water-resistant to 50 metres and presented with a power reserve of approximately 70 hours.

Specifications

• Reference: 26730ST.OO.1320ST.05
• Case Material: Stainless Steel
• Case Diameter: 41mm
• Dial: Grande Tapisserie pattern, rhodium-plated applied indices
• Movement: Calibre 2924, manual-winding flying tourbillon
• Power Reserve: ~70 hours
• Bracelet: Integrated stainless steel, AP folding clasp
• Water Resistance: 50 metres
• Functions: Hours, minutes, flying tourbillon