page_title: Frédérique Constant
section_title: Tourbillon
hierarchical_section_title: Frédérique Constant / Products and product features / Tourbillon
caption_attribution_description: English: Featured in the Frederique Constant Heart Beat FC-945 Silicium Calibre, this silicium escapement uses less power and maintains amplitude more efficiently than a standard lever escapement, because it functions without lubrication.
context_page_description: Frédérique Constant SA is a Swiss manufacture of luxury wristwatches based in Plan-les-Ouates, Geneva. It was acquired in 2016 by Citizen Holdings of Tokyo, Japan. The company was established in 1988 by Peter Stas and Aletta Stas-Bax.
  Before the sale to Citizen, Frédérique Constant SA was owned by Union Horlogère Holding B.V., which also owned Alpina Watches International SA, and Ateliers deMonaco SA, and was, in turn, owned by Frédérique Constant Holding SA.
context_section_description: In April 2008, Frederique Constant created a tourbillon with a silicon escape-wheel and, for the first time, an amplitude of over 300 degrees between its vertical and horizontal positions. Coupled with rapid oscillation, this gives the watch an unusually high level of precision.
caption: Frederique Constant escapement made of silicon; anker, wheel and plateau
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