Frédérique Constant SA is a manufacture of luxury wrist watches based in Plan-les-Ouates, Geneva. The company was established in 1988 by Dutch entrepreneur Peter Stas and his wife Aletta Bax, and is involved in all the stages of watch production, from initial design to final assembly.Since 2002, the company has also owned Alpina Watches, a manufacturer of Swiss sports watches founded in 1883.