Royal Oak Perpetual Calendar Ultra-Thin RD#2
Presented in 2018, RD#2 reorganised the perpetual-calendar mechanism within a single layer, enabling a 6.3 mm case. It is a technical milestone in ultra-thin complicated watchmaking.
History timeline
2018
Introduced
Royal Oak Perpetual Calendar
Explore the Lineage
- 1984 — Audemars Piguet Royal Oak Perpetual Calendar Model 25554
- 2018 — Audemars Piguet Royal Oak Perpetual Calendar Ultra-Thin RD#2Currently viewing
- 2025 — Audemars Piguet Royal Oak Selfwinding Perpetual Calendar — Calibre 7138Current model
Source: Audemars Piguet official
