Royal Oak Perpetual Calendar Black Ceramic 41mm

Description of the Watch

The Audemars Piguet Royal Oak Perpetual Calendar Black Ceramic 41mm (Ref. 26579CE.OO.1225CE.01) is a testament to the brand's commitment to innovation and craftsmanship. Introduced in 2017, this timepiece was the first Royal Oak model to feature both a ceramic case and bracelet, showcasing Audemars Piguet's mastery in working with advanced materials. The watch seamlessly combines the iconic Royal Oak design with the intricate mechanics of a perpetual calendar, offering a blend of aesthetic appeal and technical prowess.

Overview

Crafted entirely from hand-finished black ceramic, the 41mm case and integrated bracelet offer exceptional scratch resistance and durability. The slate grey "Grande Tapisserie" dial features black sub-dials and white gold applied hour-markers, providing a striking contrast and ensuring legibility. The perpetual calendar complication displays the day, date, month, astronomical moon, and week of the year, with a leap year indication a feature pioneered by Audemars Piguet in 1955. This watch is powered by the self-winding Caliber 5134, comprising 374 components and offering a 40-hour power reserve.

Design and Craftsmanship

The Royal Oak's signature octagonal bezel, secured with eight hexagonal screws, is rendered in black ceramic, complementing the case and bracelet. The glareproofed sapphire crystal and caseback allow for an unobstructed view of the intricate movement. The dial's "Grande Tapisserie" pattern adds depth and texture, while the luminescent coating on the hands and hour markers ensures visibility in low-light conditions. The integrated black ceramic bracelet is secured with a titanium AP folding clasp, providing both comfort and security.

Movement and Performance

At the heart of this timepiece lies the Audemars Piguet Caliber 5134, a self-winding mechanical movement developed and manufactured in-house. Operating at a frequency of 2.75 Hz (19,800 vibrations per hour), the movement features 38 jewels and boasts a power reserve of approximately 40 hours. The perpetual calendar complication is engineered to accurately display the date, day, month, leap year, and moon phase, requiring no manual correction until the year 2100.

Features and Complications

• Functions: Hours, minutes, perpetual calendar with day, date, month, week of the year, astronomical moon, and leap year indications

• Bezel: Fixed, octagonal bezel in black ceramic

• Water Resistance: Water-resistant to 20 meters (66 feet)

• Crystal: Glareproofed sapphire crystal and caseback

• Bracelet: Integrated black ceramic bracelet with titanium AP folding clasp

Specifications

Case

• Material: Black ceramic

• Diameter: 41 mm

• Thickness: 9.5 mm

• Water Resistance: 20 meters / 66 feet

• Crystal: Glareproofed sapphire crystal and caseback

Dial

• Color: Slate grey with "Grande Tapisserie" pattern

• Hour Markers: White gold applied hour-markers

• Hands: White gold Royal Oak hands with luminescent coating

Bracelet/Strap

• Material: Black ceramic

• Type: Integrated bracelet

• Clasp: Titanium AP folding clasp

Movement

• Caliber: Audemars Piguet Caliber 5134

• Mechanism: Self-winding mechanical movement

• Power Reserve: Approximately 40 hours

• Frequency: 2.75 Hz (19,800 vibrations per hour)

• Components: 374 parts

• Jewels: 38