Audemars Piguet Royal Oak Royal Oak Perpetual Calendar 38 Stainless Steel / Light Blue

Reference 26684ST.OO.1356ST.01

Audemars Piguet Royal Oak Perpetual Calendar 38 Stainless Steel / Light Blue

About this watch

The Audemars Piguet Royal Oak Perpetual Calendar Automatic 26684ST.OO.1356ST.01 debuted in 2025. This reference is housed in a stainless steel case of 38 mm with a thickness of 9.4 mm. Both front and back are fitted with glareproof sapphire crystals, and water resistance is rated at 50 meters. The integrated stainless steel bracelet is secured with an AP folding clasp. The dial is light blue with the signature Grande Tapisserie pattern. It features tone-on-tone subsidiary dials for the perpetual calendar indications, complemented by white gold applied hour markers and hands with luminescent coating, and a silvery-grey inner bezel. This model is powered by the self-winding caliber 7136, a movement measuring 29.6 mm in diameter and 4.1 mm in height, composed of 413 parts with 41 jewels. It operates at a frequency of 28,800 vph (4 Hz) and has a power reserve of 55 hours. Functions include hours, minutes, perpetual calendar with day, date, month, leap year, and astronomical moon phase. The caliber incorporates three patented mechanisms and is adjusted entirely via the crown, without the need for correction tools.
Buy Now on Jomashop
This is an affiliate link

Specifications

Brand
Audemars Piguet
Family
Royal Oak
Model
Royal Oak Perpetual Calendar 38 Stainless Steel / Light Blue
Reference
26684ST.OO.1356ST.01
Movement
ap-7136
Movement Features
  • Hours, Minutes
  • Date, Day, Leap Year, Month
  • Moonphase
Case
Stainless Steel 38mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Audemars Piguet Royal Oak Offshore Diver – White Dial Navy Accents – Ref. 15710ST.OO.A010CA.01

Audemars Piguet Royal Oak Offshore Diver – White Dial Navy Accents – Ref. 15710ST.OO.A010CA.01

Audemars Piguet - 15710ST.OO.A010CA.01 · $19,198
The Audemars Piguet Royal Oak Offshore Diver features a 42mm stainless steel case with a white dial and blue accents, combining high-end watchmaking with professional dive capability.

  • Condition: Like new - recently serviced
  • Case size: 42mm diameter
  • Case material: stainless steel
  • Dial color: white
Posted at
Apr 30, 2026, 8:50 PM
Active
View listing on r/WatchExchange
[WTS] AUDEMARS PIGUET Royal Oak Offshore Perpetual Calendar Black Rose Gold 26209OR.OO.D101CR.01

AUDEMARS PIGUET Royal Oak Offshore Perpetual Calendar Black Rose Gold 26209OR.OO.D101CR.01

AUDEMARS PIGUET - 26209OR.OO.D101CR.01 · $89,900
The Audemars Piguet Royal Oak Offshore Perpetual Calendar reference 26209OR is a highly sophisticated interpretation of the Offshore line, combining bold proportions with a full perpetual calendar complication.

  • Condition: Excellent condition
  • Production Run: 25 pieces
  • Warranty Valid Until: January 2027
Posted at
Apr 30, 2026, 1:35 PM
Active
View listing on r/WatchExchange
[WTS] Audemars Piguet Royal Oak Offshore “Pride of Argentina” 50pcs LE, $57.5k

Audemars Piguet Royal Oak Offshore “Pride of Argentina” 50pcs LE, $57.5k

Audemars Piguet - 26365OR.OO.D801CR.01 · $57,500
This limited edition Audemars Piguet Royal Oak Offshore is a unique and rare piece, with only 50 pieces produced.

  • Condition: Preowned
  • Limited edition: 50 pieces
  • Last known msrp: $69,100
Posted at
Apr 28, 2026, 10:50 AM
Active
View listing on r/WatchExchange
[WTS] 1995 Audemars Piguet Royal Oak 120th Anniversary LE ref. 56975ST w/ Box & Extract

1995 Audemars Piguet Royal Oak 120th Anniversary LE ref. 56975ST w/ Box & Extract

Audemars Piguet - 56975ST · $21,800
This is a 1995 Audemars Piguet Royal Oak 120th Anniversary Limited Edition watch in stainless steel with a blue dial. The case shows minimal wear and the bracelet is in fantastic condition.

  • Condition: Minimal wear, excellent condition overall
  • Case material: Stainless steel
  • Diameter: 33 mm
  • Lug width: 23.5 mm
Posted at
Apr 26, 2026, 9:42 PM
Active
View listing on r/WatchExchange
[WTS] Credor 9300- Amazing dial, Sapphire, Onyx Crown, Royal Oak-esque bracelet, Made in Japan

Credor 9300- Amazing dial, Sapphire, Onyx Crown, Royal Oak-esque bracelet, Made in Japan

This iconic Squared-styled watch features an amazing dial with gilt hands and markers, a Royal Oak-esque H link bracelet, and is made in Japan. It has a 9300 movement, sapphire crystal, onyx crown, and measures 29mm without crown, 38mm lug to lug, and 4 mm height.

Posted at
Apr 25, 2026, 10:12 AM
Active
View listing on r/WatchExchange
[WTS] Audemars Piguet Royal Oak 37mm Diamonds 15551OR.ZZ.1356OR.04 White 3/2026

Audemars Piguet Royal Oak 37mm Diamonds 15551OR.ZZ.1356OR.04 White 3/2026

Audemars Piguet - 15551OR.ZZ.1356OR.04 · $98,500
A 37mm Audemars Piguet Royal Oak with a white/silver tapestry dial and diamond bezel in rose gold, available as a complete March 2026 set.

  • Condition: Mint condition
  • Case size: 37mm
  • Dial color: white/silver
  • Bezel type: diamond
Posted at
Apr 24, 2026, 3:05 PM
Active
View listing on r/WatchExchange
[WTS] AUDEMARS PIGUET Royal Oak Offshore Diver Chrono Orange 26703ST.OO.A070CA.01

AUDEMARS PIGUET Royal Oak Offshore Diver Chrono Orange 26703ST.OO.A070CA.01

Audiveris Piguet - 26703ST.OO.A070CA.01 · $27,500
The AP Royal Oak Offshore Diver Chronograph is a bold and highly functional sports watch that blends the iconic Offshore design with professional diving capability. This example features a striking orange dial with chronograph subdials, paired with an internal rotating dive bezel and a stainless-steel case.

  • Condition: Excellent
  • Case material: stainless steel
  • Band: orange rubber strap
Posted at
Apr 24, 2026, 10:20 AM
Active
View listing on r/WatchExchange
[WTS] AUDEMARS PIGUET Royal Oak 41mm Chrono White Dial Steel 26320ST.OO.1220ST.02

AUDEMARS PIGUET Royal Oak 41mm Chrono White Dial Steel 26320ST.OO.1220ST.02

Audemars Piguet - 26320ST.OO.1220ST.02 · $35,900
This AUDEMARS PIGUET Royal Oak Chronograph features a 41mm case size, crisp white 'Grande Tapisserie' dial, and stainless steel octagonal bezel. It delivers a balanced and sporty aesthetic while maintaining refined finishing.

  • Condition: Excellent
  • Case size: 41mm diameter
  • Water resistance: 30m depth rating
Posted at
Apr 24, 2026, 9:16 AM
Active
View listing on r/WatchExchange
[WTS] Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 Beige Dial 43mm 26420CD.OO.A029VE.01

Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 Beige Dial 43mm 26420CD.OO.A029VE.01

Audemars Piguet - 26420CD.OO.A029VE.01 · $86,995
The Audemars Piguet Royal Oak Offshore Bleu Nuit Nuage 50 features a beige dial with a blue ceramic bezel, contrasting blue sub-dials and a matching blue rubber strap. It is powered by the integrated Calibre 4401 movement.

  • Condition: Brand new
  • Movement Type: Mechanical (Automatic)
  • Case Size: 43mm
  • Water Resistance: 100m depth rating
Posted at
Apr 24, 2026, 8:32 AM
Active
View listing on r/WatchExchange