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Photo of Nebula 40 Steel
Chronometry

HM

The HM Collection is a tribute to timeless refinement, where sleek design meets exceptional craftsmanship.

Photo of Nebula 40 Steel

The Essence of Horological Elegance

The HM Collection is a tribute to timeless refinement, where sleek design meets exceptional mechanical craftsmanship. Defined by its pure lines and ultrathin profile, it embodies Arnold & Son’s dedication to elegance and technical mastery.

To echo the density of the dial, Arnold & Son has chosen one of its most iconic movements: the A&S1001 calibre. Like all movements crafted by the brand, it is entirely developed, produced, decorated, assembled, adjusted, and cased up within the manufacture in La Chaux-de-Fonds.

Photo of Nebula 40 Steel

Beautifully constructed

This exceptional calibre boasts an ultrathin architecture, with a total thickness of just 2.7 mm, allowing for a remarkably slim case measuring only 7.82 mm. Its refined construction is complemented by an oscillation frequency of 3 Hz and a 90-hour power reserve, ensuring both precision and longevity.

True to Arnold & Son’s commitment to fine watchmaking, the A&S1001 is adorned with exquisite decorations, even on its case-back side. The movement features radiating Côtes de Genève stripes emanating from the escapement—the very heart of the mechanism. The finishing include meticulously polished and lowered angles, which contrast beautifully with the circular-grained mainplate beneath, enhancing the visual depth and sophistication of the timepiece.

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