Franck Muller (born July 1958) is a noted Swiss watchmaker and the company of the same name known for creating complicated timepieces. The brand of watches carries the slogan "Master of Complications". Franck Muller's watches are worn by various celebrities, among them are Demi Moore, Robin Williams, Elton John, 50 Cent, and José Mourinho. Franck Muller timepieces are famous for their fusion of "modern" style, mostly inspired by American watches from the thirties, like Elgin tonneau, and traditional Swiss watch manufacturing. The president of the company that holds its name is Frank Muller himself. He claims to design the mechanism of every watch by himself. In 1984, Franck Muller designed his own tourbillon wristwatch. In the 1980s, few watchmakers were capable of creating such complicated timepieces, among them Patek Philippe and Vacheron Constantin. The private clients of Franck Muller continued to come for new timepieces, and thus his business started growing. The House of Franck Muller opened in 1991, and his ultra complicated timepieces instantly became famous in Europe and the United States. Today, his factory, which is also the headquarters of Franck Muller, produces a limited number of watches for private clientele. Franck Muller's collections include a variety of designs and price ranges.

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