Audemars Piguet Royal Oak 15400ST 41 mm

Specifications

Diameter41 mm

MaterialStainless Steel

Bracelet materialStainless Steel

CalibreAP 3120

Water resistance5 bar / 50 m

Case9 fields

Diameter	41 mm
Thickness	9.8 mm
Shape	Octagonal
Material	Stainless Steel
Bezel	Fixed octagonal bezel with exposed white-gold hex screws
Bezel material	Stainless Steel
Caseback	Open caseback
Crystal	Sapphire
Water resistance	5 bar / 50 m

Dial and bracelet5 fields

Lume	Luminous
Luminous display	Yes
Strap or bracelet	Bracelet
Bracelet material	Stainless Steel
Clasp	Folding Clasp

Movement2 fields

Calibre	AP 3120
Movement	Automatic

Reference details1 field

Gender	Men's

Price history

Latest full-set median SAR 186,240 11 Nov 2026

Latest median SAR 191,132 11 Nov 2026

Lowest median SAR 174,069 14 Aug 2026

Highest median SAR 208,919 14 Sep 2026

Median delivered estimate Lowest tracked offer Full-set pricing

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15 daily market snapshots since 14 Aug 2026. For watches with the original box and papers, the chart shows the sole qualifying offer or the median of several.

15400ST

At a glance

Production: 2012 to 2019
Movement: Audemars Piguet Calibre 3120

Overview

About this reference

For the better part of a decade the steel 41mm selfwinding Royal Oak meant the 15400ST. Produced from 2012 to 2019, it is the bracelet octagon of that generation: Calibre 3120, open caseback, white-gold hex screws in a steel bezel. It is neither the extra-thin Jumbo nor the current steel chronograph that replaced the idea of a single default 41mm Oak.

The mix-up is generational as much as material, and plenty of Saudi-shipping listings sit in that grey zone. Check for a 41mm steel time-only watch on a steel bracelet, not a chronograph and not a two-tone case. The 15400OR is the pink-gold twin. The 15450ST is the 37mm sibling. The 26240ST is the later 41mm steel chronograph on Calibre 4401.

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