In the history of ultra-thin movements, Piaget stands out as a pioneer with its famous Calibre 9P hand-wound movement and Calibre 12P self-winding movement, both representing the thinnest in the world in the category at the time of their respective launches in 1957 and 1960. This legacy has led to modern movements, such as the 430P, 450P and 438P, measuring a mere 2.1 millimetres thick. In the exacting field of ultra-thin calibres, extraordinary mastery is required to push the components to the limits of their capacity and ensure fine adjustment. When it comes to putting technical prowess at the service of creativity, Piaget has no equal. The Manufacture’s artisans took advantage of the new opportunities afforded by these watch movements, creating understated, elegant watches for men as well as jewelled timepieces adorned with precious stones. This mastery has helped forge Piaget’s reputation and singular identity, expressed with particular poignancy by the Altiplano range, which owes its existence to Piaget’s ultra-thin movements.