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Audemars Piguet

Audemars Piguet Royal Oak Dual Time 26120ST.OO.1220ST.03

The Audemars Piguet Royal Oak Dual Time (reference 26120ST.OO.1220ST.03) is a 39 mm stainless steel watch with a black dial. It runs on the automatic caliber 2329/2846 with a 38-hour power reserve and is water resistant to 50 m. It is no longer in production.

Specifications

Case

Reference
26120ST.OO.1220ST.03
Collection
Royal Oak
Case size
39 mm
Thickness
10.3 mm
Case material
Stainless steel
Case shape
Round
Crystal
Sapphire
Water resistance
50 m
Bracelet / strap
Integrated bracelet, stainless steel

Dial and bezel

Dial
Black
Bezel
Octagonal, screwed

Movement

Movement
Automatic
Caliber
2329/2846 (base Jaeger-LeCoultre 889)
Power reserve
38 hours
Frequency
28,800 vph
Jewels
33
Functions
GMT, Power reserve indicator, Day/night indicator

Production

Production
Discontinued

How it compares within the Royal Oak family

Side by side with other references in the same collection, from the catalog.

ReferenceSizeMaterialDialCaliberYears
26120ST.OO.1220ST.03 (This watch)39 mmStainless steelBlack2329/2846—
15510ST.OO.1320ST.1041 mmStainless steelGrey43022023–
16202XT.OO.1240XT.0139 mmTitanium and bulk metallic glassRed71212023–
26240BC.GG.1324BC.0241 mmWhite goldBlue44012023–
26240BC.OO.1320BC.0141 mmWhite goldPurple44012023–
26240BC.OO.1320BC.0441 mmWhite goldBlue44012025–
26240BC.SS.1320BC.0141 mmWhite goldBlue44012023–
26585XT.OO.1220XT.0141 mmTitanium / BMGSkeleton51352025–
26586XT.OO.1240XT.0141 mmTitanium / BMGPink51332026–

About the Royal Oak family

The Royal Oak was introduced in 1972 with ref. 5402, a steel watch designed by Gérald Genta with an octagonal bezel held by eight hexagonal screws, a Tapisserie-patterned dial and an integrated bracelet. It established the idea of a luxury sports watch in steel.

The extra-thin 39 mm models, such as ref. 15202 and the ref. 16202 of 2022 with caliber 7121, are the direct descendants of the original. Other key families include the 41 mm Selfwinding 15500 and 15510, the chronographs such as ref. 26240, perpetual calendars such as ref. 26574 and many gold, ceramic and titanium versions. Dealers read the full reference to confirm case material and dial, and check for polishing, which can soften the case's sharp edges.

Quick answers

What size is the Audemars Piguet Royal Oak Dual Time 26120ST.OO.1220ST.03?
The Audemars Piguet Royal Oak Dual Time 26120ST.OO.1220ST.03 has a 39 mm case, 10.3 mm thick.
What movement does the Audemars Piguet Royal Oak Dual Time 26120ST.OO.1220ST.03 use?
It uses the automatic caliber 2329/2846, with a 38-hour power reserve.
How water resistant is the Audemars Piguet Royal Oak Dual Time 26120ST.OO.1220ST.03?
It is water resistant to 50 metres.
Is the Audemars Piguet Royal Oak Dual Time 26120ST.OO.1220ST.03 still in production?
Discontinued.
What is the Audemars Piguet Royal Oak Dual Time 26120ST.OO.1220ST.03 made of?
The case is stainless steel. Bracelet or strap: Integrated bracelet, stainless steel.

Catalog facts checked September 2026.