Audemars Piguet Royal Oak Royal Oak Perpetual Calendar 41 Ceramic / Slate
Reference 26579CE.OO.1225CE.01
About this watch
The Audemars Piguet Royal Oak Perpetual Calendar 41 Ceramic / Slate stands as a testament to the brand's legacy of innovation and elegance. At its heart lies the exceptional Audemars Piguet caliber AP 5134, an automatic movement that redefines the boundaries of watchmaking. With its extra-thin design, suspended barrel, and frequency of 19,800 vibrations per hour, this caliber is designed for precision. The movement's gears are meticulously crafted, offering a seamless experience as it tracks hours, minutes, and calendar features like date, day, leap year, and month indicators. The moon phase indicator, laser microstructured on an aventurine base, adds an ethereal quality to the watch. The combination of titanium and ceramic makes this timepiece durable, lightweight, and scratch-resistant, while the slate grey dial provides a captivating backdrop for its features. Measuring 41mm in diameter and just 9.5mm in height, the Royal Oak Perpetual Calendar is perfectly sized for various wrists. Its unique shape and open case back offer a glimpse into the intricate workings of the movement, allowing wearers to appreciate the craftsmanship involved. With a water resistance of 20 meters, this watch is suitable for everyday wear, but not designed for deep-sea diving. The Royal Oak Perpetual Calendar 41 Ceramic / Slate is an investment that combines innovation and elegance in a way that few can rival.
Key Features
- Audemars Piguet caliber AP 5134 automatic movement
- Extra-thin design with suspended barrel
- Frequency of 19,800 vibrations per hour
- Moon phase indicator with laser microstructured aventurine base
- Titanium and ceramic construction for durability and lightness
- Slate grey dial with stick and dot indexes
- 41mm diameter and 9.5mm height for a perfect fit
- Water resistance of 20 meters for everyday wear
Specifications
- Brand
- Audemars Piguet
- Family
- Royal Oak
- Model
- Royal Oak Perpetual Calendar 41 Ceramic / Slate
- Reference
- 26579CE.OO.1225CE.01
- Movement
- ap-5134
- Movement Features
-
- Hours, Minutes
- Date, Day, Leap Year, Month, Week Indicator
- Moonphase
- Case
- 41mm
- Dial Color
- Grey
- Crystal
- Sapphire
- Water Resistance
- 20
Current Listings
![[WTS] 2025 Audemars Piguet Royal Oak Chronograph 26240OR — Brand New Condition With Original Box & Papers](https://preview.redd.it/nmx2uz7oixcf1.jpeg?auto=webp&s=1dd05c971989d70f740d26e5fb922668c881b417)
2025 Audemars Piguet Royal Oak Chronograph 26240OR — Brand New Condition With Original Box & Papers
The Audemars Piguet Royal Oak Chronograph 26240OR is a 41mm chronograph in rose gold with a black dial and hand-stitched alligator strap. It features an in-house Caliber 4401 with flyback functionality.
- Condition: Brand new
- Case size: 41mm diameter
- Lug to lug length: 51.5mm
- Thickness: 12.4mm
![[WTS] AP Royal Oak Offshore Flyback Chrono Green Khaki - Full Set - Excellent](https://preview.redd.it/956z584tbmef1.jpg?width=640&crop=smart&auto=webp&s=aa6d8375d2ac511628d5c7ec68ca9842296e743c)
AP Royal Oak Offshore Flyback Chrono Green Khaki - Full Set - Excellent
A luxury watch featuring a green dial and khaki accents, part of the Royal Oak Offshore collection.
- Condition: Excellent
- Material: Titanium

Unworn 2025 Audemars Piguet Royal Oak 41mm Green khaki shade. 15510ST.OO.1320ST.09
A brand new, 2025 Audemars Piguet Royal Oak in a 41mm case size with a green khaki shade dial.
- Condition: Unworn
- Case Size: 41mm

Audemars Piguet Royal Oak Offshore Rubens Barrichello II 26078PO.OO.D018CR.01 Platinum.
This is an Audemars Piguet Royal Oak Offshore Rubens Barrichello II, a limited edition platinum model. It comes with warranty booklets and a service box.
- Condition: Excellent
- Material: Platinum

Audemars Piguet 26470ST.00.A028CR.01 Royal Oak Offshore
This Audemars Piguet Royal Oak Offshore is in very good condition, with a range of accessories including books, warranty cards, and rubber straps.
- Condition: Very good condition
- Bracelet type: Factory AP steel bracelet
- Additional straps: black rubber, blue rubber
![[WTS] Audemars Piguet Royal Oak Offshore Diver Carbon 15706AU – $22,488 Shipped (2013 Box & Papers)](https://preview.redd.it/ad37y4j6kgef1.jpg?width=640&crop=smart&auto=webp&s=35f4d62da01f41c8182d4571d75e6f91b30a5d77)
Audemars Piguet Royal Oak Offshore Diver Carbon 15706AU – $22,488 Shipped (2013 Box & Papers)
The Audemars Piguet Royal Oak Offshore Diver 15706AU is a lightweight powerhouse with serious wrist presence and collector appeal. Crafted in forged carbon, it's a unique and wearable Offshore model.
- Condition: Good - carbon case beautifully preserved; light signs of wear only
- Material: Forged carbon case, ceramic bezel
- Size: 42mm diameter
- Movement: AP Caliber 3120, running well
![[WTS] [US] Audemars Piguet Royal Oak Offshore Chronograph 44mm Black Forged Carbon Fiber Ceramic - 26400AU](https://preview.redd.it/wchv6f7i0gef1.jpg?width=640&crop=smart&auto=webp&s=a5d962a17edb924488481769bc438f601bd82f53)
[US] Audemars Piguet Royal Oak Offshore Chronograph 44mm Black Forged Carbon Fiber Ceramic - 26400AU
A 44mm Audemars Piguet Royal Oak Offshore Chronograph with a carbon fiber case and ceramic bezel, featuring a decorated movement through an open case back.
- Condition: Very Good
- Case size: 44mm
- Material: carbon fiber
- Bezel material: ceramic
![[WTS] [US] Audemars Piguet Royal Oak Offshore Chronograph 42mm Blue “Beast” - AP 26237ST Full Set](https://preview.redd.it/64c2gn5gxfef1.jpg?width=640&crop=smart&auto=webp&s=b15c17bc794274cb47ae7ff0973d65685ca3b723)
[US] Audemars Piguet Royal Oak Offshore Chronograph 42mm Blue “Beast” - AP 26237ST Full Set
- Condition: Very Good
- Case size: 42mm diameter
- Water resistance: Unknown
- Movement: In-house automatic chronograph

MINT Audemars PIGUET ROYAL OAK DUAL TIME 26120ST STAINLESS STEEL BLUE DIAL 39MM
A 39mm Audemars Piguet Royal Oak Dual Time in stainless steel with a blue dial.
- Condition: Mint, Unpolished
- Case Size: 39mm
- Material: Stainless Steel
- Dial Color: Blue