This unique book for a unique watch is the fascinating story of the Calibre 89, the most complicated portable timepiece ever built. A beautifully produced and illustrated study into the mechanical representation of time, it puts the Calibre 89 in the context of the great horological undertakings of the world.. Patek Philippe Calibre 89 with 33 Complication is the The World's Most Complicated Timepiece ever created. Made to commemorate the 150th Anniversary of Patek Philippe. The Voyage to the end of Time is was commissioned to reference the story of the watch and those that built it.