Ladies and gentlemen, it is with great pleasure that we introduce an exquisite addition to the world of haute horlogerie – the Nebula 40 Steel, Blue Edition by Arnold & Son. This timepiece is a harmonious blend of elegance and precision, a true testament to the art of watchmaking, continuing a superb line within A&S collections. Bearing the brand’s legacy of innovation, the Nebula 40 Steel Blue captivates with its aesthetic allure while standing as a symbol of technical mastery. The distinctive star-shaped arrangement of its seven bridges lays bare the beauty of its mechanical heart, offering a profound connection between style and substance.

The dial of the Nebula 40 Steel Blue is a masterpiece of horological design, showcasing Arnold & Son’s commitment to minimalistic beauty and intricate craftsmanship. It features a flange with a beautiful blue PVD treatment, accentuated by rhodium-plated appliqués that elegantly mark the hours and minutes. The openness of the dial provides a tantalising view into the heart of the timepiece, allowing a glimpse of the superbly executed movement below. On the lower side of the dial, the small seconds are gracefully positioned to add to the balanced symmetry, ensuring the wearer is continuously aware of time’s fluid passage.

At the core of the Nebula 40 Steel Blue Edition beats the impressive A&S5201 calibre. This mechanical movement, renowned for its manual winding mechanism, exudes a sophistication that is both technical and visual. The calibre, adorned in a striking blue PVD treatment, comprises 24 jewels and has a diameter of 31.10 mm with a thickness of 4.18 mm, embodying compact efficiency. With a substantial power reserve of 90 hours, it exhibits a frequency of 3 Hz (21,600 vibrations per hour). Every component, from the polished and chamfered palladium-treated bridges to the rhodium-plated balance, has been meticulously finished, highlighting the calibre’s intricate architecture.

Sheltering this mechanical wonder is a robust yet elegantly designed 40 mm case made from stainless steel. The Nebula 40 Steel Blue Edition, available until now only in 41.5mm, achieves an eloquent balance between durability and grace with its slender thickness of 9.10 mm. The watch face is protected by a domed sapphire crystal, offering double-sided anti-reflective coating for optimal clarity. On the reverse, the case back is also fitted with sapphire crystal, ensuring that every exquisite detail of the movement can be admired. With water-resistance up to 3 bar (30 metres), the case serves as a guardian of the movement showcasing Arnold & Son‘s commitment to offering enduring timepieces.

The Nebula 40 Steel Blue Edition is an embodiment of horological artistry and engineering precision. Perfectly balancing form and function, it invites the connoisseur into a universe where innovation meets timeless elegance. Whether adorned with a blue alligator leather strap, a blue rubber strap, or a chic three-link steel bracelet, this watch offers versatility and sophistication for every occasion. With the Nebula 40 Steel Blue, Arnold & Son continues to honour its legacy by delivering a captivating narrative of the past, present, and future of watchmaking sophistication. And we love it!
Arnold & Son Nebula 40 Steel Blue Edition Technical Specifications
References
- steel bracelet: 1NEGS.U01A.S135D – CHF 17,600 incl. VAT (subject to change)
- alligator strap: 1NEGS.U01A.C1235S – CHF 16,900 incl. VAT (subject to change)
- rubber strap: 1NEGS.U01A.K0243S – CHF 16,700 incl. VAT (subject to change)
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















