Audemars Piguet Royal Oak Minute Repeater Supersonnerie Ceramic — Diamond-Set Black Dial | Ref. 26591CE.OO.D002CA.02

The Supersonnerie designation identifies one of the most acoustically perfected repeater watches ever produced by any manufacture: a system in which the movement's architecture, the case's resonance cavity, and the gongs' metallurgy have been engineered as a unified acoustic instrument. In Ref. 26591CE.OO.D002CA.02, this technological achievement is housed within a 42 mm black ceramic Royal Oak — a material chosen not only for its extraordinary hardness and scratch resistance, but for its specific acoustic properties, which Audemars Piguet's engineers determined could enhance the Supersonnerie's already exceptional sound projection. The manual-wind movement within is built to the highest standards of Grande Complication finishing.

The black dial makes one of horology's most dramatic visual statements: set entirely with baguette-cut diamonds, their precise rectangular forms arranged in a pattern that fills the Grande Tapisserie-structured surface with prismatic brilliance. Luminous hands cut through this field of gemstones with the visual clarity their purpose demands — telling the time remaining always the primary obligation, however spectacular the supporting display. The octagonal ceramic case — its solid caseback concealing rather than revealing the movement, prioritising acoustic performance over visual exposition — wears the hallmark eight-screw bezel with the authority only AP can deploy.

A matching black ceramic integrated bracelet flows from the case to the AP folding clasp with the seamless continuity of a piece engineered as a single object rather than assembled from parts. Water resistant to 20 metres. At $404,999, Ref. 26591CE.OO.D002CA.02 occupies the summit of the Royal Oak's complication hierarchy — a watch that can be heard as well as seen, performing twice daily in a private concert available only to its wearer.