Our Take

Based in La-Chaux-de-Fonds, Switzerland, Arnold and Son continues to climb the ladder of artistry in watchmaking. With the latest release at Watches and Wonders 2022, the brand is back with another stellar ultrathin tourbillon in platinum and red gold cases with cosmic green and blue dial.

Focusing on a new, refined design, the Ultrathin Tourbillon Platinum is a slimmer version of its predecessors. And that’s thanks to caliber A&S8300. At just 2.97 mm thick, this tourbillon with extremely fine finishing is one of the slimmest ever designed. The highest point of the A&S8300 calibre is located on the top of the tourbillon carriage, which has also been redesigned and undergone significant changes in relation to its predecessors. It features a variable-inertia balance with inertia blocks to ensure more stable calibration over time as well as all the emblems of the brand’s supreme horological craftsmanship – Côtes de Genève main plate, hand polished and chamfered bridges, circular satin-finished wheels.

On the dial side, the cosmic green or blue is an homage to the stars that played a massive role in John Arnold’s maritime navigational work in horology during the 18th century. Its texture is produced through a mixture of gold powder mixed and aluminum sparkles to create the lightly sandblasted appearance. Measuring at 41.5 the updates UTTE is an outstanding execution on one or John Arnold’s core complications.

The Details

Brand: Arnold and Son

Model: Ultrathin Tourbillon

Functions: Hours, minutes

Movement: A&S8300 - Ultrathin Tourbillon

Case: 41.5mm, platinum Pt950

Dial: Cosmic Grené or Blue

Strap: Alligator Leather

Water Resistance: 30 m / 100 feet

Limited Edition: 28 pieces