Audemars Piguet Royal Oak Royal Oak Perpetual Calendar Stainless Steel / Blue

Reference 25820ST.OO.0944ST.05

Audemars Piguet Royal Oak Perpetual Calendar Stainless Steel / Blue

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.
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MSRP: $40,500
Market Price: $109,775

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

[WTS] Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial 44mm Box & Papers 26405NR.OO.A002CA.01

Audemars Piguet Royal Oak Offshore Selfwinding Chronograph Ceramic Rose Gold Grey Dial 44mm Box & Papers 26405NR.OO.A002CA.01

Audemars Piguet - 26405NR.OO.A002CA.01 · $47,495
This watch is a strong, attention-grabbing piece from AP with a beautiful rose gold and black ceramic design. It features a smoked grey dial and comes in its original outer box, inner wood box, booklets, and warranty card.

  • Condition: like new
  • Case Size: 44mm diameter
  • Movement Caliber: 3126/3840
  • Power Reserve: 50 hours
Posted at
Jan 2, 2026, 8:42 AM
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[WTS] Audemars Piguet Royal Oak Chronograph Yellow Gold Green Dial 41mm 26331BA.OO.1220BA.02

Audemars Piguet Royal Oak Chronograph Yellow Gold Green Dial 41mm 26331BA.OO.1220BA.02

Audemars Piguet - 26331BA.OO.1220BA.02 · $195,000
This stunning Royal Oak shines in yellow gold with a rich green dial, one of only 125 pieces ever made.

  • Condition: like new
  • Case Size: 41mm diameter
  • Case Thickness: 11mm height
  • Movement Type: Mechanical (Automatic)
Posted at
Jan 2, 2026, 8:37 AM
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[WTS] Audemars Piguet Royal Oak Chronograph 41mm Rose Gold Brown 26331OR

Audemars Piguet Royal Oak Chronograph 41mm Rose Gold Brown 26331OR

Audemars Piguet - 26331OR.OO.D821CR.01 | 26331OR · $54,300
A Royal Oak Chronograph in rose gold with a brown dial and 41mm case, featuring a self-winding chronograph movement.

  • Condition: Excellent condition with light wear on the case, bezel, and clasp
  • Case size: 41mm diameter
  • Movement type: selfwinding chronograph
  • Power reserve: 40 hours
Posted at
Jan 1, 2026, 4:28 PM
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[WTS] Audemars Piguet AP Royal Oak Tapisserie Octagon Key Ring (Keychain) Silver Pre-Owned, see pics for condition

Audemars Piguet AP Royal Oak Tapisserie Octagon Key Ring (Keychain) Silver Pre-Owned, see pics for condition

Audemars Piguet - null · $7,500
  • Model type: Royal Oak Tapisserie Octagon Key Ring (Keychain)
  • Material: Silver
Posted at
Jan 1, 2026, 9:36 AM
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[WTS] [US] Audemars Piguet Royal Oak 41mm White Silver Dial Stainless Steel AP 15400ST

[US] Audemars Piguet Royal Oak 41mm White Silver Dial Stainless Steel AP 15400ST

Audemars Piguet - 15400ST
Posted at
Dec 30, 2025, 2:59 PM
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[WTS] [US] Audemars Piguet Royal Oak Selfwinding 39mm Rare Blue Dial Stainless Steel 15300st

[US] Audemars Piguet Royal Oak Selfwinding 39mm Rare Blue Dial Stainless Steel 15300st

Audemars Piguet - 15300ST
The watch is an Audemars Piguet Royal Oak Selfwinding 39mm with a rare blue dial and stainless steel case.

  • Case material: Stainless Steel
  • Diameter: 39mm
Posted at
Dec 30, 2025, 2:55 PM
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[WTS] Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 26238CD.OO.1300CD.01 Complete Set

Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 26238CD.OO.1300CD.01 Complete Set

Audemars Piguet - 26238CD.OO.1300CD.01 · $129,995
The Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 is a bold design with an unmistakable Offshore character, featuring a 42mm case and in-house flyback chronograph movement.

  • Condition: Like new
  • Case size: 42 mm
  • Case material: Blue ceramic with titanium caseback
  • Dial color: Blue
Posted at
Dec 30, 2025, 9:01 AM
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[wts] Audemars Piguet Royal Oak Offshore "Panda" | White Dial Ref. 26170ST.OO.D101CR.02 | 42mm | Stainless Steel | W/ Box | White Dial | Red Accents

Audemars Piguet Royal Oak Offshore "Panda" | White Dial Ref. 26170ST.OO.D101CR.02 | 42mm | Stainless Steel | W/ Box | White Dial | Red Accents

Audemars Piguet - 26170ST.OO.D101CR.02 · $17,840
The Audemars Piguet Royal Oak Offshore 'Panda' features a white dial with black sub-dials and red chronograph hands, creating a dynamic visual tension. The 42mm stainless steel case houses the Manufacture 3126 / 3840 automatic movement with 50-hour power reserve and hacking seconds function.

  • Condition: Excellent (9/10)
  • Case material: Stainless Steel
  • Diameter: 42mm
Posted at
Dec 29, 2025, 6:27 PM
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[WTS] Audemars Piguet Royal Oak Offshore "Elephant" | Slate Gray Dial Ref. 26470ST.OO.A104CR.01 | 42mm | Stainless Steel | Full Set | Slate Gray Dial

Audemars Piguet Royal Oak Offshore "Elephant" | Slate Gray Dial Ref. 26470ST.OO.A104CR.01 | 42mm | Stainless Steel | Full Set | Slate Gray Dial

Audemars Piguet - 26470ST.OO.A104CR.01 · $22,850
This Audemars Piguet Royal Oak Offshore features a slate gray dial, black sub-dials, and thinned Arabic numerals on a 42mm stainless steel case with a Manufacture Calibre 3126 / 3840 automatic movement.

  • Case diameter: 42mm
  • Material: Stainless Steel
  • Movement: Manufacture Calibre 3126 / 3840
Posted at
Dec 29, 2025, 6:25 PM
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