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 is a strong and beautiful rose gold and black ceramic Audemars Piguet Royal Oak Offshore Selfwinding Chronograph with a 44mm case size, smoked grey dial, and features like chronograph and date.

  • Condition: like new
  • Case size: 44mm diameter
  • Water resistance: 100m (10ATM) depth rating
  • Movement caliber: 3126/3840
Posted at
Jan 16, 2026, 8:10 AM
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[WTS] 1988 Seiko Quartz Chronograph “Royal Oak” Ref. 7A38-7280 | $305

1988 Seiko Quartz Chronograph “Royal Oak” Ref. 7A38-7280 | $305

Seiko - 7A38-7280 · $305
The watch is a two-tone, angular, Royal Oak-inspired chrono powered by one of the best quartz movements ever made. It has a slim, sharp design that's more refined than most people would expect from a Seiko. The 7A38-7280 is pure 80s Seiko flex with real horology behind it.

  • Condition: Good condition for its age with some markings on the case and bracelet, mineral crystal in good shape
  • Case Size: 37.3 x 41.5mm
  • Movement Type: quartz
  • Jewels: 15
Posted at
Jan 15, 2026, 5:15 PM
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[WTS] 2021 Audemars Piguet Royal Oak Offshore Chrono "The Beast" 42mm 26238ST Blue Dial - $36,900

2021 Audemars Piguet Royal Oak Offshore Chrono "The Beast" 42mm 26238ST Blue Dial - $36,900

Audemars Piguet - 26238ST.OO.2000ST.01 · $36,900
2021 Audemars Piguet Royal Oak Offshore Chronograph 42mm with a blue dial and stainless steel case.

  • Box: true
  • Papers: true
  • Manual: true
Posted at
Jan 15, 2026, 3:27 PM
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[WTS] Audemars Piguet Royal Oak Offshore "Vampire" 26470ST - Mint

Audemars Piguet Royal Oak Offshore "Vampire" 26470ST - Mint

Audemars Piguet - 26470ST.OO.A101CR.01 · $20,895
The watch is an Audemars Piguet Royal Oak Offshore with a black Méga Tapisserie dial and blood-red chronograph accents, powered by the Calibre 3126/3840 self-winding movement.

  • Condition: Excellent
  • Movement: Calibre 3126/3840 self-winding (automatic)
  • Functions: chronograph, date, hours/minutes/seconds, small seconds
  • Power reserve: 50 hours
Posted at
Jan 13, 2026, 11:21 AM
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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 · $123,995
This Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 features a bold design, ceramic build, and in-house flyback chronograph movement. The 42 mm case delivers classic power in a modern form.

  • Condition: like new
  • Case size: 42 mm
  • Movement caliber: Calibre 4404
  • Power reserve: 70 hours
Posted at
Jan 13, 2026, 8:25 AM
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[WTS] Audemars Piguet Royal Oak Offshore Blue Dial - 25721ST.OO.1000ST.09 The BEAST!

Audemars Piguet Royal Oak Offshore Blue Dial - 25721ST.OO.1000ST.09 The BEAST!

Audemars Piguet - 25721ST.OO.1000ST.09 · $21,000
The Audemars Piguet Royal Oak Offshore has a blue dial, white accents, and full bracelet giving it a unique presence.

  • Box: true
Posted at
Jan 10, 2026, 9:41 AM
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[WTS] 2017 Audemars Piguet Royal Oak Offshore Diver 42MM White Dial Rubber Strap 15710ST.OO.A002CA.02

2017 Audemars Piguet Royal Oak Offshore Diver 42MM White Dial Rubber Strap 15710ST.OO.A002CA.02

Audemars Piguet - 15710ST.OO.A002CA.02 · $194,900
This is a 2017 Audemars Piguet Royal Oak Offshore Diver in stainless steel with a white dial, on a rubber strap.

  • Condition: near-mint condition with almost zero wear
  • Case size: 42mm
  • Case material: stainless steel
  • Dial color: white
Posted at
Jan 9, 2026, 10:15 PM
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[WTS] Audemars Piguet Royal Oak Offshore 43MM “Smoked Taupe” - Ref 26420SO.OO.A600CA.01 (EXCELLENT 2022 COMPLETE SET)

Audemars Piguet Royal Oak Offshore 43MM “Smoked Taupe” - Ref 26420SO.OO.A600CA.01 (EXCELLENT 2022 COMPLETE SET)

Audemars Piguet - 26420SO.OO.A600CA.01 · $31,650
A 43MM Audemars Piguet Royal Oak Offshore in smoked taupe, featuring a factory warranty intact until 2027 and included with outer box, inner box, manuals, and unworn strap.

  • Condition: Excellent pre-owned
  • Case size: 43mm diameter
  • Water resistance: 50m depth rating
Posted at
Jan 9, 2026, 5:09 PM
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[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
The watch is a 44mm rose gold and black ceramic masterpiece from AP, featuring a smoked grey mega tapisserie dial, mechanical movement, and 100m water resistance.

  • Condition: Like new
  • Movement Caliber: 3126/3840
  • Case Size: 44mm diameter
  • Water Resistance: 100m (10ATM)
Posted at
Jan 9, 2026, 8:10 AM
Active
View listing on r/WatchExchange