The Jacob & Co. Bugatti Chiron Sapphire Green Crystal is identified in secondary coverage as a green sapphire-cased version of the Chiron Tourbillon. Its defining feature is a miniature mechanical W16 engine automaton, paired with a tilted flying tourbillon. The exact green reference and its official specifications have not been confirmed: Jacob & Co.’s located product page describes a blue sapphire configuration, not the green watch.
What is the Jacob & Co. Bugatti Chiron Sapphire Green Crystal?
It is presented as a green-colorway member of the Jacob & Co.–Bugatti Chiron Tourbillon Sapphire Crystal family. Watchonista identifies the “Bugatti Chiron Sapphire Green Crystal” and describes its case as made completely from sapphire crystal. That identification is secondary coverage, rather than a confirmed manufacturer specification for the green reference. Watchonista’s green-variant coverage should therefore be read as evidence of the colorway’s identification, not as a substitute for a reference-specific technical sheet.
Jacob & Co.’s official page found for the family lists a blue sapphire crystal version with a rose-gold backplate, while the brand’s official video description surfaced a yellow sapphire example. Neither establishes the exact reference or configuration of the green watch. Jacob & Co.’s blue configuration is useful for understanding the family, but its specifications should not be transferred to the green version.
What does the Chiron Tourbillon do?
The watch turns the Chiron’s W16 engine into a mechanical spectacle. Jacob & Co. describes the movement as a miniature W-shaped 16-cylinder engine block. Pressing the activation crown sets off an automaton that animates its 16 pistons for a 15-second sequence. The brand’s family description also details the watch’s controls and display.
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- At 6 o’clock: three crowns sit along the case flank. One sets the time, the center crown winds the movement and automaton in opposite directions, and the right crown activates the W16 animation.
- Tourbillon: a one-minute flying tourbillon is tilted by 30 degrees.
- Power reserve: a fuel-gauge-style indicator shows the remaining reserve.
The design is intentionally evocative rather than a literal engine replica: the case draws on Chiron bodywork, while the movement puts the W16 block at the center of the display.
What specifications are officially published?
Jacob & Co.’s product page lists the following for its blue sapphire crystal with rose-gold backplate configuration, item BU210.80.AM.UB.B. These values are not verified specifications for the green watch.
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| Specification | Blue sapphire configuration |
|---|---|
| Movement | Hand-wound caliber JCAM37 |
| Components and jewels | 578 components; 51 jewels |
| Power reserve | 60 hours |
| Frequency | 21,600 vibrations per hour (3 Hz) |
| Functions | Hours and minutes, one-minute flying tourbillon inclined by 30 degrees, W16 engine-block automaton, and power-reserve indicator at 9 o’clock |
| Case | 57.8 × 44.4 mm; 21.5 mm high |
| Materials | Blue sapphire crystal with anti-reflective coating and 18K rose gold |
| Water resistance | 30 m (3 atm) |
| Edition designation | Listed as a unique piece |
These figures belong to the blue configuration on Jacob & Co.’s page, whose publication date is not stated. The family description separately gives the 15-second animation duration; it does not establish that the blue-page figures or that duration are specific to the green variant. See the official blue configuration listing and the family description.
How did the Jacob & Co.–Bugatti watch collaboration begin?
Bugatti announced the Chiron Tourbillon on April 20, 2020, calling it the first all-new timepiece of the Jacob & Co.–Bugatti partnership. The announcement says the watch followed almost a year of development and describes a Chiron-inspired case surrounding a W16 engine-block movement beneath a large sapphire crystal. Bugatti’s newsroom announcement frames the project around translating the visceral sensation of the W16 into a timepiece.
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- Self-developed automatic calibre integrated with 30 jewels. With a power reserve of 40 hours and a movement frequency of 28800 times/hour.
- CIGA Design Asynchronous-Follow Movement Technology: Revolutionizing traditional movement gear ratios, this innovative mechanism features a stationary hour dial paired with a dynamic minute dial on the same plane. In this unique configuration, the hour hand moves through a 30° arc while the minute hand completes a 390° rotation, allowing time to be indicated from a single reference point.
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What is known about the green version’s price and availability?
The exact green reference, price, serial number, production count, and current availability are unverified in the sources available here. Do not infer these details from the blue listing, the clear-sapphire configuration, or older coverage. The Japanese Jacob & Co. listing for a clear-sapphire model gives a different item number and a seven-piece edition; that information does not identify or describe the green watch.
Before treating any listing as the same watch, ask Jacob & Co. to confirm the reference and match the case color, any metal backplate, movement specification, dimensions, and edition information to that exact reference. Those details can vary across configurations in the Chiron Tourbillon line.
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- A Masterpiece of Art: Earth, our only blue sanctuary, has been made fragile by human actions. Inspired by the urgent need to protect our planet, the CIGA Design Blue Planet collection was created to embody this message. It urges everyone to listen to Earth’s pulse and protect our shared home.
- Challenge Watch Prize Winner of 2021 GPHG - Grand Prixd'Horlogerie de Genève, acclaimed as the watch industry "Oscars", an annual competition involving several hundreds of watches marketed during the year and attributing the highest awards in this domain, contributes to enhancing the traditions, skills and values of Swiss – and indeed universal – watchmaking culture.
- Self-developed automatic calibre integrated with 30 jewels. With a power reserve of 40 hours and a movement frequency of 28800 times/hour.
- CIGA Design Asynchronous-Follow Movement Technology: Revolutionizing traditional movement gear ratios, this innovative mechanism features a stationary hour dial paired with a dynamic minute dial on the same plane. In this unique configuration, the hour hand moves through a 30° arc while the minute hand completes a 390° rotation, allowing time to be indicated from a single reference point.
- A Minimalist Presentation - Booklet packaging and page-turning design fulfill the curiosity of every time-explorer, entirely made of eco-friendly premium book paper. The sporty yet stylish FKM strap (commonly called fluoro-rubber) naturally complements the dial and can be dressed up or dressed down.
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- A Masterpiece of Art: Earth, our only blue sanctuary, has been made fragile by human actions. Inspired by the urgent need to protect our planet, the CIGA Design Blue Planet collection was created to embody this message. It urges everyone to listen to Earth’s pulse and protect our shared home.
- Challenge Watch Prize Winner of 2021 GPHG - Grand Prixd'Horlogerie de Genève, acclaimed as the watch industry "Oscars", an annual competition involving several hundreds of watches marketed during the year and attributing the highest awards in this domain, contributes to enhancing the traditions, skills and values of Swiss – and indeed universal – watchmaking culture.
- Self-developed automatic calibre integrated with 30 jewels. With a power reserve of 40 hours and a movement frequency of 28800 times/hour.
- CIGA Design Asynchronous-Follow Movement Technology: Revolutionizing traditional movement gear ratios, this innovative mechanism features a stationary hour dial paired with a dynamic minute dial on the same plane. In this unique configuration, the hour hand moves through a 30° arc while the minute hand completes a 390° rotation, allowing time to be indicated from a single reference point.
- A Minimalist Presentation - Booklet packaging and page-turning design fulfill the curiosity of every time-explorer, entirely made of eco-friendly premium book paper. The sporty yet stylish FKM strap (commonly called fluoro-rubber) naturally complements the dial and can be dressed up or dressed down.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
