@jacobandco unveils the Bugatti Tourbillon Sapphire Crystal, a new expression of its hypercar-inspired watchmaking in which the defining evolution is the case itself. For the first time, the watch is cut entirely from solid sapphire, with the caseback, caseband and upper bezel each machined from full blocks of the material — a process that requires more than 800 hours of work for every case.

Within that transparent architecture sits one of the watch’s signature elements: a V16 engine block automaton carved from a single block of sapphire, with 16 titanium pistons driven by a single-axis crankshaft. Where earlier versions revealed only parts of the interior, the new sapphire case leaves nothing hidden, giving full view to one of the most elaborate and delicate components ever conceived in modern watchmaking.

Inside is Calibre JCAM55, one of the most architecturally ambitious movements in independent watchmaking and a miniature interpretation of a V16 engine. Activated by the pusher integrated into the crown, all 16 pistons fire in sequence for a 20-second animation. To the left sits a 30-second flying tourbillon — Jacob & Co.’s fastest to date, chosen as a tribute to the Bugatti hypercar’s 276mph top speed — while the hours and minutes are displayed by retrograde indications sweeping a 270-degree arc at the centre, in a direct nod to the car’s RPM counter.

The first series comprises just two unique pieces: one in Jacob & Co.’s signature green, and the other in Jacob Arabo’s favourite baby blue, with matching subdials, exhaust manifolds and rubber strap. Priced at US$1.2 million, the Bugatti Tourbillon Sapphire Crystal stands as the most transparent and perhaps most literal expression yet of the house’s approach to automotive watchmaking.

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The centenary of the Oyster this year brought with it something rather unexpected – the return of the Yacht-Master II. While the Oyster case represents @rolex Rolex at its most foundational and universal, the Yacht-Master II has always occupied the opposite extreme. It was one of the most specialised, mechanically exotic and bizarrely compelling watches the company has ever produced.

The new Yacht-Master II is visually and operationally far more amiable. It retains the three defining traits of the model – the ability to pre-program a countdown duration, preserve the programmed duration after reset and most importantly, re-synchronise to the nearest minute while it is already running. But gone is the Ring Command system and with it much of the ceremonial complexity of the original watch. Programming the countdown is now performed directly through the pushers themselves, while the movement automatically transitions between synchronisation, reset and programming states. Yet what makes the new watch interesting is that Rolex does not appear to have simplified the underlying idea but rather internalised it, and characteristically, has done so in a manner that is unusually sophisticated for what it is attempting to achieve.

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@zenithwatches introduces the first release in its new Double Signed Program with the G.F.J. Calibre 135 Double Signed with @naoya_hida_co.official, a collaboration that brings the Japanese independent’s classical mid-century-informed design language to one of Zenith’s most important modern collections.

Reimagined in platinum and limited to just 10 pieces, the watch pairs the revived Calibre 135 with a solid silver dial shaped by Naoya Hida’s distinctive sensibility. The dial carries both Zenith and Naoya Hida & Co. signatures, with indications engraved using a traditional pantograph machine. Its three Arabic numerals are individually hand-finished by Japanese engraver Keisuke Kano before being filled with blue Japanese urushi lacquer, giving the surface a sense of depth and quiet presence.

That same disciplined approach continues throughout the watch. The hour and minute hands are milled from solid gold and hand-polished, while the small seconds hand at six o’clock is made from heat-blued steel. Housed in a 39.15mm platinum G.F.J. case, the watch is paired with three straps that extend its Japanese character: Himeji Kurozan leather, Wagyu leather crafted in Kyoto, and deep indigo non-stretch denim by Kaihara.

Visible through the sapphire caseback is the manually wound Calibre 135, beating at 18,000 vibrations per hour and offering a 72-hour power reserve. COSC-certified and regulated to +/-2 seconds per day, it remains the point of the watch: a historic chronometer movement reinterpreted through a thoughtful collaboration that also sets the tone for Zenith’s new Double Signed series.

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We were honoured to be invited to Grand Seiko’s inaugural Ushio (潮) Immersion Journey, an experience created to bring us closer to the inspiration behind the new Grand Seiko Ushio 300 Diver. Named after the Japanese word for “tide”, Ushio reflects the dynamic movement of the sea that surrounds Japan and serves as the creative foundation for the watch.

More than just a product introduction, the journey offered a deeper understanding of the culture, craftsmanship, and traditions that have shaped Grand Seiko, while also providing a glimpse into the brand’s future.

From the bustling streets of Ginza in Tokyo to the rugged beauty of the Izu Peninsula, we witnessed a remarkable contrast of landscapes. From urban sophistication to dramatic coastlines, rolling waves, and striking rock formations. Experiencing these environments firsthand made it easy to understand the natural inspiration behind the Ushio’s distinctive dial.

Of course, no watch journey would be complete without the watches on our wrists. Here are some of the timepieces we spotted throughout the trip.

A heartfelt thank you to the Grand Seiko team and everyone involved in organising this unforgettable experience.

📸 - @constant.kw ...

To mark its 30th anniversary, @parmigianifleurier unveils the Carillon Tourbillon, a five-piece limited edition that brings together restoration, sound and contemporary high watchmaking in one of the Maison’s most personal creations to date.

Its point of departure is an early 19th-century Perrin Frères pocket watch from the Sandoz Collection, restored by Michel Parmigiani and his ateliers in 2000. Rather than reproduce the historic piece, Parmigiani Fleurier carries forward one of its most distinctive ideas: four serpentine gongs that wrap around the architecture of the watch, turning the chiming mechanism into both an acoustic and visual signature.

Inside is the manual-winding calibre PF950, a 456-component manufacture movement combining a minute repeater with four gongs, a regulating flywheel and a 60-second tourbillon. Two barrels supply the gear train and deliver a power reserve of at least 10 days, while a third barrel is dedicated to the striking mechanism and is automatically rewound only when the repeater slide is activated. The four gongs create a four-note chime, with one low-pitched gong for the hours, one high-pitched gong for the minutes, and two additional notes for the quarters.

On the dial side, a hand-hammered Morning Blue dial in white gold leaves space for the visible hammers and sweeping gongs, while the tourbillon and power reserve are reserved for the caseback. Across the movement, the hand-executed mezzo vibrato decoration extends the idea further, making the vibration of the carillon visible even before it is heard.

Housed in a 41.6mm white gold case with column-inspired gadroons, the Carillon Tourbillon continues a recurring thread in Parmigiani Fleurier’s recent high complications: considerable mechanical complexity expressed through a notably understated design language. ...

The true measure of a watch is not how it is received when it is launched, but how it is regarded thereafter.

Twenty-five years after its debut, the Quattro remains one of the clearest expressions of the values that have come to define @chopard Chopard L.U.C: technical substance, artisanal craftsmanship and a refusal to chase fleeting trends.

What is striking today is how little the original concept requires updating. The proportions remain elegant and the design, purposeful. And the movement that once set a benchmark for long power reserve continues to impress.

In revisiting the original Ref. 16/1863, the Quattro Revolution Re-edition is not merely looking back. Rather, it is a reminder that some ideas endure because they were right from the very beginning.

Limited to 20 numbered pieces. Priced at CHF 32,500 excluding taxes.

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Before quartz, chronometry was one of watchmaking’s highest pursuits. From marine chronometers built to keep time with exceptional consistency at sea, to observatory trials that tested a movement’s accuracy under demanding conditions, the measurement of time represented the cutting edge of science, engineering and human endeavour.

With the @montresbreguet Classique Chronométrie Ref. 7727, that pursuit returned in radical form. Beating at 10 hertz and equipped with magnetic pivots, the watch reimagined the mechanical regulating system — and in 2015, anonymously achieved the highest score in the history of the Concours International de Chronométrie.

Now, the new Classique Ref. 7225 carries that achievement into a fitting contemporary sequel, pairing the same 10Hz magnetic-pivot movement with Breguet gold and a dial inspired by Abraham-Louis Breguet’s historic tourbillons.

There is much more behind this remarkable chapter in chronometry. Read the full article on RevolutionWatch.com (link in bio). ...