Thinnest manual-winding watch: Piaget Altiplano Ultimate Concept
Its case height is an astonishing 2mm; to put it into perspective, it is no thicker than 2 credit cards. The Altiplano Ultimate Concept builds upon the revolutionary idea of merging the movement with the case so that the latter also doubles as the baseplate. Piaget first presented this concept in 2014 in the Altiplano 900P.
To push the limits of minituarisation further, the watchmakers made the construction of the movement as compact as possible without compromising on performance. For instance, the regulating organ’s balance staff, inner ring and roller are one indivisible whole. The barrel’s mainspring is integrated within the frame. The crown has been redesigned as a flat telescopic shape that slots perfectly inside the caseband, leaving no jutting element. The crystal protecting the movement is a mere 0.2mm, a significant reduction from the standard 1mm.