The Audemars Piguet Royal Oak Chronograph 26331ST.OO.1220ST.03 is a modern interpretation of the iconic Royal Oak chronograph, combining luxury finishing with sporty functionality. It features a 41mm stainless steel case, integrated bracelet, and Audemars Piguet’s signature design language, most notably the octagonal bezel with exposed screws and the textured “Grande Tapisserie” dial.

This specific reference is especially popular for its “panda” aesthetic, a light/silver dial contrasted with darker subdials, giving it strong visual presence and legibility.

Key Features

• Iconic Royal Oak Design
• Octagonal bezel with 8 hexagonal screws
• Integrated stainless steel bracelet with brushed & polished finishing
• Slim, angular case profile (~11mm thickness)

Instantly recognizable as a Royal Oak

Dial & Aesthetics

• “Grande Tapisserie” waffle-pattern dial
• Panda-style layout (silver/white dial + contrasting subdials)
• Applied white gold hour markers with lume

• Date window repositioned at 4:30 (modern AP design change)

Chronograph Layout

• Three subdials:

  • 30-minute counter

  • 12-hour counter

  • Small seconds

• Clean, balanced layout with improved readability

Movement (Calibre 2385)

• Self-winding automatic chronograph
• Based on the high-end Frédéric Piguet 1185 architecture
• Approx. 40-hour power reserve
• Smooth chronograph operation with column wheel construction

Case & Build

• Case size: 41mm
• Material: Stainless steel
• Water resistance: 50 meters (5 ATM)
• Sapphire crystal (scratch-resistant)

Bracelet & Wearability

• Fully integrated steel bracelet
• Alternating brushed & polished finishing
• Comfortable, ergonomic fit for daily wear

Functions

• Hours, minutes
• Small seconds
• Chronograph (stopwatch)
• Date display

What Makes This Model Special?

• One of the last Royal Oak chronographs before the newer 26240 generation
• Highly collectible due to classic proportions + modern tweaks
• The panda dial variant (ST.03) is particularly sought-after
• Balances sport, luxury, and heritage design extremely well