Royal Oak Perpetual Calendar Sand Gold Beige Dial 41mm

The Audemars Piguet Royal Oak Perpetual Calendar (ref. 26674SG.OO.1320SG.01) advances the legacy of one of the maison’s most technically accomplished models, here rendered in a material entirely new to the Royal Oak line: Sand Gold. With its muted brilliance and slightly pink undertone, this proprietary alloy reinforces the case and bracelet's signature blend of brushed and polished surfaces, complemented by a harmonising Sand Gold-toned dial that retains the Royal Oak’s moonphase aperture and day, date, month, and leap year subdials.

Measuring 41mm, the case is constructed in solid Sand Gold and offers water resistance to 50 m—a notable improvement for a perpetual calendar in this collection. Inside is the latest selfwinding calibre 7138, introduced in 2025, with refined architecture optimised for reliability, calendar accuracy, and slimness. Despite the complexity of the functions displayed, the dial remains legible and symmetrical within its octagonal bezel framed by visible hexagonal screws.

This iteration marks a first for the Royal Oak in terms of material innovation, pairing one of AP’s most intricate complications with a visually distinctive and proprietary alloy. Collectors will note the enhanced wearability and visual warmth of the Sand Gold case, setting this reference apart in both aesthetic and technical evolution.