Jelly Piano GZ159 is a 1999 Swatch Art Special designed by architect Renzo Piano in collaboration with the Centre Pompidou. The transparent watch deliberately exposes its internal mechanism, echoing the “inside-out” architectural language of the Centre Pompidou, whose structural and mechanical systems are visibly expressed on the exterior of the building. The Centre Pompidou documents the watch as a design object made from molded ABS and flexible PVC, measuring approximately 23 cm / 9.1 in overall with a case diameter of about 3 cm / 1.18 in.
Edition: Swatch Art Special, 1999 / fixed edition size not reliably documented.
Long Description:
Jelly Piano GZ159 is an artist-designed Swatch created by internationally renowned architect Renzo Piano and released in 1999 as part of Swatch’s Art Special program.
The watch was developed in direct connection with the Centre Pompidou in Paris, the landmark building designed by Renzo Piano and Richard Rogers. The Centre Pompidou itself catalogs Jelly Piano as a 1999 design by Piano, edited jointly by Swatch, Bienne and the Centre Pompidou, Paris.
Its defining feature is complete visual transparency. Rather than concealing the internal mechanics of the watch, the design allows the movement and construction to remain visible. Swatch describes this as an “inside-out” approach, directly reflecting Piano’s architectural philosophy for the Centre Pompidou, where structural elements, circulation systems, and technical infrastructure were intentionally exposed rather than hidden.
The Centre Pompidou records the watch as being constructed from molded acrylonitrile butadiene styrene (ABS) and flexible polyvinyl chloride (PVC). It measures approximately 23 cm / 9.1 in in total length, with a case diameter of about 3 cm / 1.18 in.
The transparent case and strap create an unusually minimal visual effect, allowing the internal watch mechanism itself to become the decoration. This approach makes Jelly Piano as much a small design object as a functional wristwatch.
