The dial of this piece is delicately decorated with grand feu enamel, which uses the champlevé technique.
This process involves engraving recesses from a gold base to form the basis of the design. Several layers of enamel are successively applied, then fired, until the hollows are filled. The resulting dial is the whitest of whites. It is brought to life by the light which plays off each and every layer of the enamel, giving it a sense of depth despite its perfectly flush satin-finish.
Taking the refinement to yet another level, the movement bridges have been decorated using an exceptionally fine guilloché technique. The network of lines this creates forms thousands of parallel ribs, with no straight lines or angles to be found anywhere. This decorative work is significantly more complex than a classic "Côte de Genève", creating a wave effect which animates the bridges and brings the fresco to life, reflecting light in all directions.
Minute repeater, tourbillon and perpetual calendar - three complications combined within a single integrated movement - make the Tecnica Ombre Blanche one of the most complex timepieces in the world of Haute Horlogerie.