Royal Oak 26586IP.OO.1240IP.01

The Royal Oak Selfwinding Perpetual Calendar Ultra-Thin, the world’s thinnest automatic perpetual calendar wristwatch, marks Audemars Piguet’s latest technological milestone with a movement of 2.89mm thick and a case of 6.3mm in height. Presented as a prototype at the SIHH in 2018 as RD#2, it now combines titanium and 950 platinum for an elegant look and a lighter feel on the wrist. Its combination of titanium and 950 platinum provides an elegant look and a significant lighter feel on the wrist. Satin-brushed titanium case, glareproofed sapphire crystal and caseback, polished 950 platinum bezel. Blue dial, satin-brushed, blue counters, white gold applied hour-markers and Royal Oak hands with luminescent coating.

Source: Audemars Piguet website, last updated Mar 2026