The Audemars Piguet Royal Oak Flying Tourbillon Extra-Thin RD#3 (ref. 26660BC.ZZ.1356BC.01) brings Haute Horlogerie finesse to the historic Royal Oak silhouette in a sleek 37mm format. Released in 2022, this reference showcases a white-gold case set with brilliant-cut diamonds on the bezel and paired with a smoked blue dial – a colour gradient that deepens toward the periphery, amplifying the tourbillon's visual presence at 6 o’clock.

Housed within is the ultrathin calibre 2968, a selfwinding flying tourbillon movement just 3.4mm thick. Developed specifically for smaller cases, it delivers a 50-hour power reserve and offers a fine view through the sapphire caseback of its hand-finished components. The integrated white-gold bracelet maintains the Royal Oak's brushed and polished tonal contrasts, while water resistance of 50m adds everyday practicality to this technically nuanced piece.

As the debut 37mm flying tourbillon in the Royal Oak lineup, this “RD#3” represents a milestone in miniaturised complication design. Its limited production and stone-set execution make it particularly sought-after among collectors drawn to both mechanical ingenuity and artisanal finishing.