In 2004, Frederique Constant presented its first caliber developed and produced internally: the "Heart Beat Calibre". Ten years later, Peter and Aletta Stas, the couple that founded and manages what is also today a little watchmaking group with the brands Alpina and Ateliers De Monaco too, celebrated this milestone. Today, Frederique Constant possesses 15 in house calibers and others are to be launched in the next months.