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Arnold & Son Nebula 40 Steel, Blue Edition Design Philosophy: Radiating Harmony

JUNE 10 2025    |    Novelties

The watch features a star-shaped arrangement of seven bridges, radiating from the center like a nebula, giving it both structural integrity and visual depth.

The movement is laid out with four lines of symmetry, aligning the barrels, balance, and small seconds for a harmonious aesthetic.

Technical Excellence: A&S5201 Calibre

Dual barrels provide an impressive 90-hour power reserve.

Components are arranged in a kinematic chain around the edge, enhancing both function and form.

The crown mechanism is inverted and placed on the case-back side for symmetry with the first wheel at 9 o’clock.

Aesthetic Details

The lower levels of the movement are treated with a rich blue PVD, contrasted by palladium-finished bridges and components.

Includes horizontal satin brushing on the dial side and Arnold & Son’s signature ‘Rayons de la Gloire’ motif on the reverse.

The 40 mm diameter and 9.10 mm thickness ensure elegance on the wrist.

Strap & Bracelet Options

Available with a blue alligator leather or rubber strap.

Also offered with a three-link steel bracelet that highlights the watch’s symmetry and skeletonized beauty.

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Arnold & Son Nebula 40 Steel, Blue Edition

Arnold & Son Nebula 40 Steel, Blue Edition

Technical Specifications

Functions hours, minutes, small seconds
Movement Calibre: A&S5201, mechanical with manual winding
Jewels: 24
Diameter: 31.10 mm
Thickness: 4.18 mm
Power reserve: 90 hours
Frequency: 3 Hz / 21,600 vph
Decoration:
- Main plate: blue PVD treatment, ‘Rayons de la Gloire’
- Barrel covers: blue PVD treatment
- Bridges: palladium-treated, polished and chamfered, satin-finished surfaces
- Balance: rhodium-plated
- Wheels: circular-grained and chamfered
- Chatons: 18-carat gold
- Screws: chamfered, with mirror-polished heads
Dial Flange with blue PVD treatment, rhodium-plated appliqués
Case Material: Stainless steel
Diameter: 40 mm
Thickness: 9.10 mm
Crystal: Domed sapphire, double-sided anti-reflective coating
Case back: Sapphire crystal, anti-reflective coating
Water-resistance: 3 bar (30 metres / 100 feet)
Strap Material: Stainless steel, blue alligator leather or blue rubber
Clasp: Stainless steel, folding clasp on steel bracelet, pin buckle on alligator or rubber straps
References Steel bracelet: 1NEGS.U01A.S135D
Alligator strap: 1NEGS.U01A.C1235S
Rubber strap: 1NEGS.U01A.K0243S

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Chronoswiss Celebrates 30 Years of Horological Innovation with the Opus Purple Rain Limited Edition

Chronoswiss celebrates three decades of horological mastery with the launch of the Opus Purple Rain, a bold and limited edition chronograph that reimagines the brand’s iconic skeletonized timepiece. Limited to just 30 pieces worldwide, this anniversary edition marks a milestone in modern independent watchmaking, honoring the legacy of the original Opus while pushing the boundaries of design and mechanical transparency.

First introduced in 1995 by Chronoswiss founder Gerd-Rüdiger Lang, the Opus revolutionized the chronograph landscape by exposing its intricate movement architecture on the dial side—a radical departure from the traditionally closed and utilitarian chronographs of the time. The Opus became a symbol of mechanical artistry and a signature of the brand’s avant-garde spirit.

The Opus Purple Rain carries this legacy into the future with unapologetic flair. Encased in Grade 5 titanium and finished with a radiant purple CVD coating, the watch is both lightweight and visually arresting. Its skeletonized dial, also rendered in ultraviolet hues, reveals the ruthenium-coated Chronoswiss C.741S automatic chronograph caliber, offering a 46-hour power reserve and a full suite of chronograph functions including central seconds, 30-minute and 12-hour counters, small seconds, and date.

Adding to its rebellious character is a white UV-reactive leather strap that transforms into glowing purple when exposed to sunlight—an unexpected and surreal tribute to the energy behind this creation. Signature Chronoswiss elements such as the onion crown, coin-edged bezel, and patented Autobloc screw-in lugs remain intact, anchoring the watch in its heritage while embracing a futuristic aesthetic.

“The Opus Purple Rain is not just a commemorative piece—it’s a statement,” said Chronoswiss CEO Oliver Ebstein. “It embodies the spirit of mechanical transparency and innovation that has defined Chronoswiss for 30 years. This is a watch for those who dare to see how far precision and design can be pushed.”

With only 30 pieces produced, the Opus Purple Rain is destined to become a collector’s treasure—a celebration of the past, a vision of the future, and a mechanical theatre on the wrist. 

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JULY 03 2026    |    Novelties

PULSE GMT Frosted Guilloche Gold: A Masterclass in Modern Mechanical Craftsmanship

Chronoswiss has officially introduced the Pulse GMT Frosted Guilloche Gold, a striking new expression of modern travel time created in its Atelier Lucerne. Housed in a beautifully sculpted 41mm 18ct (5N) gold case, this timepiece seamlessly brings precious materials into the bold, architectural world of the Pulse design family. Redefining the brand’s classic codes with a sharper, sportier attitude, the watch features Chronoswiss’s iconic onion crown, a partially knurled coin-edge bezel, and an exclusive new integrated black rubber strap. This exclusive, modern masterpiece is strictly limited to just 50 pieces worldwide.

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The solid 26-piece gold case, weighing 48 grams, balances satin-finished and sandblasted textures with a partly polished bezel, offering 5 bar (50 meters) of water resistance. Secured to the wrist by a black integrated rubber strap and a matching black DLC-coated stainless steel and 5N gold buckle, the watch represents the ultimate expression of the brand’s "Modern Mechanical" philosophy. By contrasting traditional luxury with high-functioning, contemporary materials, the Pulse GMT Frosted Guilloche Gold is engineered as a sophisticated mechanical companion for an ever-moving world.

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JUNE 25 2024    |    Novelties

Back in sleek anthracite: Armin Strom unveils the One Week Manufacture Edition

Biel/Bienne, Switzerland, 26 June 2024: Following the inaugural redesigned One Week First Edition that made its debut in 2023, Armin Strom unveils a new version of the successor to its first-ever manufacture movement with the One Week Manufacture Edition. The highly architectural openworked movement, housed in a sleek and sporty steel case with an integrated bracelet, is now presented in a range of grey and anthracite hues. Limited to 100 pieces, the One Week Manufacture Edition foregoes colour to bring out the beauty of its uniquely constructed manual calibre.

15 years ago, independent watchmaking brand Armin Strom took a major leap that would forever change its trajectory. Realising that the path to true independence lies in mastering every step of the process, it established its very own manufacture in Biel. A year later, the first timepiece produced by its vertically integrated manufacture was unveiled: the One Week. Entirely developed and manufactured in-house and designed with symmetrical harmony in mind, it stood out thanks to its unique movement architecture featuring two barrels that together provide a seven-day power reserve. This milestone marked the beginning of many new calibres and innovations by the Armin Strom manufacture, showcasing their dedication to the science of movement and garnering the admiration and respect of even the most discerning and seasoned collectors.

The new One Week Manufacture Edition completely reimagines this milestone calibre in line with the brand’s recent bolder, more three-dimensional approach to calibre design, all in a sleek and serene execution that further highlights its ingenuity and uniqueness. The mainplate, bridges and parts, visible on the dial thanks to the openworked movement design, are anthracite PVD coated for a striking look.

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Sporty yet classy, this model exudes calmness and serenity with its anthracite tones and the symmetrical harmony of its in-house movement.

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gérald genta unveils the Geneva Time Only — sculptural elegance distilled into a 38 mm cushion‑case

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“I wanted to capture the intuitive, instinctive genius and artistry of Mr. Genta,” says Matthieu Hegi, Artistic Director at La Fabrique du Temps Louis Vuitton, who leads the Geneva collection’s creative direction.

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Armin Strom Introduces The One Week Skeleton

The Armin Strom One Week Titanium Skeleton, an openworked masterpiece now fully skeletonized to reveal the intricate heart of its mechanics, combines striking design with precision engineering. Encased in lightweight titanium grade 5, it balances strength with comfort, providing a feeling of lightness that makes it easy to wear all week long.

The Armin Strom One Week Titanium Skeleton is a showcase of skeletonization, a technique that is rooted in Mr. Armin Strom’s philosophy and heritage. He sought to enhance depth and three-dimensionality while avoiding see-through to maintain elegance.

The 2023 One Week was already openworked by nature, but this version goes even further, removing more material to highlight the movement’s complexity. Few watches combine openworking and skeletonization at this level. The small seconds dial is skeletonized, revealing the power reserve level and the escapement wheel for a 3D mechanical animation. The mainplate and the barrels are also skeletonized enhancing aesthetics. Thanks to this skeletonization, the power reserve indicator is highlighted as well as the cone mechanism, reminiscent of ancient pocket watches. A major highlight is the case back, offering a mesmerizing view of the entire mechanism.

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