Arnold & Son Ultrathin Tourbillon Skeleton Platinum and Red Gold
Featuring the A&S8320 calibre, one of the slimmest skeleton tourbillon movements at 3.3 mm, these 41.5 mm diameter watches offer a 100-hour power reserve. Share
Arnold & Son’s latest creations, the Ultrathin Tourbillon Skeleton in both Red Gold and Platinum tell a story of sophistication, engineering marvels, and aesthetic finesse. Crafted with the connoisseur in mind, the new case design elegantly stretches across a 41.5 mm diameter while maintaining a remarkably svelte profile at just 8.4 mm thick.
This case showcases the flying tourbillon calibre in an exhibition of mechanical purity and simplicity. The series is available in two precious metals, red gold and platinum, each limited to an intimate series of 28 pieces, making each watch a rare treasure.
Arnold & Son’s journey with the Ultrathin Tourbillon collection showcases the mastery behind the A&S8320 calibre. Encased in either the warm hues of red gold (5N) or the lustrous sheen of platinum (PT 950), each watch is a testament to the brand’s legacy of precision and elegance. The movement itself is a marvel of engineering, achieving a slimness that places it among the elite of skeleton tourbillon calibres at just 3.3 mm thick. It’s about being thin while balancing beauty and precision, featuring a one-minute flying tourbillon that boasts a variable-inertia balance for unparalleled calibration stability.
The art of skeletonization is taken to new heights with the Ultrathin Tourbillon Skeleton. The calibre reveals a ballet of curves, apertures, and inflection points, all accentuated by an original finish. The bridges, adorned with rose-gold PVD and decorated with radiating Côtes de Genève stripes, reflect a harmony of light and shadow, while the flange frames the calibre, drawing the eye to the off-centred white opal dial—pure, uncluttered, and utterly captivating.
At the heart of this masterpiece beats the A&S8320 calibre, a testament to Arnold & Son’s commitment to innovation and excellence. The flying tourbillon, designed without an upper bridge to minimize thickness, features a variable-inertia balance that ensures the timepiece maintains its elegant profile and its precise timekeeping. The carriage, with its slender triangular form supported by a double arrow counterpoise, adds a dynamic element as it indicates the passing seconds, completing one rotation per minute.
Moreover, Arnold & Son has pushed the boundaries of what’s possible with the A&S8320 calibre’s power reserve. Offering 100 hours of energy—a significant achievement for such a slim tourbillon—this feature aligns with the brand’s reputation for high-performing calibres.
