With the new UTTE (Ultra-Thin Tourbillon Escapement) introduced at BaselWorld 2013, Arnold & Son claims the achievement of a record bringing to the market the world’s thinnest tourbillon watch – with the final cased watch measuring a mere 8.34 mm thick.
The A&S8200 movement measuring just 2.97 mm thick was developed, designed and manufactured entirely in house at the brand’s La Chaux-de-Fonds workshops.
To ensure a long power reserve of at least 80 hours, the brand implemented two barrels to offer more constant force and unprecedented power reserve for an ultra-thin tourbillon. The flying tourbillon cage is not inset into the calibre, but instead rises out of the movement, through the dial, and achieves the same height as the hour and minute hands.
The watchmakers removed all visible screws so the spherical tourbillon cage appears beautifully balanced. The only visible screws are on the regulator.
The 42 mm UTTE case is available created in either red gold or palladium. Each movement is finished in a colour to complement the case colour, and each features a different Côtes de Genève pattern. The red gold case model (1UTAR.S01A.C120A) houses the movement treated in rhodium and decorated with Côtes de Genève rayonnantes. The palladium UTTE version (1UTAG.S03A.C121G) houses a grey treated movement decorated with a straight Côtes de Genève pattern.
Production is limited to just 50 timepieces of each of the two models.