Audemars Piguet Royal Oak Royal Oak Perpetual Calendar Stainless Steel / Blue
Reference 25820ST.OO.0944ST.05
About this watch
The Audemars Piguet Royal Oak Perpetual Calendar is a masterpiece of horology, blending tradition with modernity in a stunning stainless steel case paired with a striking blue dial. The 39 mm diameter strikes a perfect balance between boldness and elegance, while the tapisserie pattern on the dial catches the light beautifully. Crafted from high-quality stainless steel, this watch not only looks fantastic but is also built to last. The sapphire crystal glass adds to its robustness, providing scratch resistance and clarity. At the core lies the Audemars Piguet caliber AP 2120 / 2802, an engineering marvel designed for exceptional user experience. With an automatic mechanism, it harnesses energy from wrist movements, boasting a power reserve of approximately 40 hours. One standout feature is its perpetual calendar, adjusting for months of varying lengths and leap years, while the moonphase complication adds celestial beauty. The integrated bracelet is both visually appealing and ergonomic, ensuring a snug fit on the wrist. With manual finishing of the movement and stringent quality control, each piece is a work of art. This exclusivity makes it a coveted piece among collectors, elevating your watch game to new heights.
Key Features
- Audemars Piguet caliber AP 2120 / 2802 automatic movement
- Perpetual calendar with leap year and month adjustment
- Moonphase complication with Physical Vapor Deposited (PVD) metal on sapphire
- Sapphire crystal glass for scratch resistance and clarity
- 39 mm stainless steel case diameter
- 9.30 mm height for comfortable wear
- 20 meters water resistance for everyday use
Specifications
- Brand
- Audemars Piguet
- Family
- Royal Oak
- Model
- Royal Oak Perpetual Calendar Stainless Steel / Blue
- Reference
- 25820ST.OO.0944ST.05
- Movement
- ap-2120-2802
- Movement Features
-
- Hours, Minutes
- Date, Day, Leap Year, Month, Perpetual Calendar
- Moonphase
- Case
- Stainless Steel 39mm
- Dial Color
- Blue
- Crystal
- Sapphire
- Water Resistance
- 20
Current Listings
Audemars Piguet Royal Oak Offshore Selfwinding Chronograph 26238CE.00.1300CE.01
This is an Audemars Piguet Royal Oak Offshore Selfwinding Chronograph, a men's watch with a ceramic case and band, featuring automatic movement and a sapphire crystal.
- Condition: Mint
- Case Diameter: 42mm
- Water Resistance: 100m/ 10ATM
- Band Size: 7.25"
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Audemars Piguet Royal Oak Offshore Chronograph Panda | ref. 26400SO | 2015 Set
The watch is an Audemars Piguet Royal Oak Offshore Chronograph Panda in a 44mm case, featuring a ceramic bezel and crystal. It has a sharp and unpolished finish, with only light hairlines on the case and clasp.
- Condition: Excellent condition overall
- Case size: 44mm
- Movement speed: -6spd at 320amp

Unworn 2025 Audemars Piguet Royal Oak 41mm Green khaki shade. 15510ST.OO.1320ST.09
This is an unworn 2025 Audemars Piguet Royal Oak in a 41mm case, featuring a green khaki shade dial.
- Condition: Unworn
- Boxes: yes, included with purchase
- Books: yes, included with purchase
- Warranty card: yes, included with purchase

Audemars Piguet Royal Oak Offshore Rubens Barrichello II 26078PO.OO.D018CR.01 Platinum.
This is a Royal Oak Offshore Rubens Barrichello II watch in platinum, known for its unique design and high-quality materials.
- Condition: Excellent
- Warranty booklets: present
- Service box: present
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Audemars Piguet Royal Oak Offshore 42mm Blue “Beast” AP 26237ST Box and Papers
a pre-owned Audemars Piguet Royal Oak Offshore 42mm Blue "Beast" with a stainless steel case and blue dial.
- Material: stainless steel
- Case diameter: 42mm