Audemars Piguet Unveils Royal Oak Jumbo RD#5 With Flying Tourbillon And Flyback Chronograph
Audemars Piguet celebrates its 150th anniversary with a remarkable addition to its Research & Development series: the Royal Oak “Jumbo” Extra-Thin Selfwinding Flying Tourbillon Chronograph RD#5. Limited to just 150 pieces, this model introduces an entirely new chronograph movement within the iconic 39 mm “Jumbo” case, while also integrating an ultra-thin flying tourbillon.

A Case Worthy of a Milestone
The RD#5 retains the proportions that have made the Royal Oak “Jumbo” a timeless favorite: 39 mm in diameter and just 8.10 mm in thickness. The case is crafted from lightweight titanium, complemented by elements in Bulk Metallic Glass (BMG), including the bezel, pusher system, bracelet studs, and crown selector. On the wrist, the piece preserves the slender, elegant profile that has defined the “Jumbo,” while introducing new levels of technical complexity.

The dial stays true to the collection’s codes, presented in the classic “Bleu Nuit, Nuage 50” hue, with two sunken chronograph counters enhanced by a snailed finish. White gold hands indicate the hours and minutes, while the chronograph hands are executed in titanium to reduce weight and increase efficiency. Marking the anniversary, the dial features a large Audemars Piguet script logo, and the caseback is engraved “1 of 150.”

The New Calibre 8100
At the core of the RD#5 lies the newly developed Calibre 8100, a self-winding flyback chronograph with a flying tourbillon. Measuring 31.40 mm in diameter and just 4 mm in height, it represents a radical rethink of chronograph architecture.
The most significant departure from convention is the replacement of the traditional hammer and heart cam reset system with a rack and pinion design. Each chronograph hand is connected to its own rack, which stores and releases energy as the hands move. This innovation allows resets to occur in under 0.15 seconds with minimal pressure on the pushers, aided by lightweight titanium components.

The flyback mechanism also benefits from this architecture, enabling instantaneous restarts without the need for extra force. Powering the caliber is a peripheral rotor, the first ever used in a Royal Oak “Jumbo”, ensuring unobstructed views of the movement’s intricate mechanics through the sapphire caseback.
Ultra-Thin Flying Tourbillon
Derived from the brand’s earlier RD#3 project, the tourbillon integrates seamlessly into the ultra-thin movement. It features a titanium cage, a flat hairspring, stepped balance arms, and internal timing weights. Together, these innovations enhance precision while maintaining a minimal profile.
Crown Selector System
In another functional refinement, the crown has been redesigned to simplify user interaction. Instead of pulling out the crown, a push-piece in its center activates the time-setting mode, with a red indicator confirming the function change. This mechanism improves durability and user ergonomics while preserving water resistance.

Limited to 150 Pieces
The Royal Oak “Jumbo” Extra-Thin Selfwinding Flying Tourbillon Chronograph RD#5 is limited to just 150 pieces worldwide, each priced at CHF 260,000. It represents both a culmination of Audemars Piguet’s decade-long RD series and a tribute to the brand’s 150 years of innovation.
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General Specifications:
Brand: Audemars Piguet
Model: Royal Oak Jumbo Extra-Thin Selfwinding Flying Tourbillon Chronograph RD#5 150th Anniversary
Reference: 26545XT.OO.1240XT.01
Dial: Bleu Nuit, Nuage 50 with Petite Tapisserie pattern
Lume: Super-LumiNova
Case Material: Titanium and bulk metallic glass (BMG)
Case Dimensions: 39 mm Diameter, 8.10 mm thickness
Crystal: Sapphire Glass
Case Back: Sapphire Glass
Water Resistance: 20 Meters
Strap: Integrated titanium and BMG bracelet with a titanium folding clasp
Calibre: 8100
Dimensions: 31.40 mm Diameter, 4 mm thickness
Functions: Hours, minutes, one-minute flying tourbillon, flyback chronograph
Winding: Automatic
Frequency: 3 Hz (21,600 Vph)
Jewels: 72
Components: 379
Power Reserve: 72 Hours
Price: CHF 260,000
Limited Edition: Yes, 150 pieces
Availability: Now
































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