Frederique Constant Watch Highlife Chronograph Automatic FC-391NS4NH4. Frederique Constant’s showcase collection is celebrating its twenty fifth anniversary and unveiling brand new variations of its sports model, the 41-millimetre Chronograph Automatic, to mark the occasion. The non limited edition featuring the exquisitely elegant combination of a rose gold plated case and a midnight blue dial. Powered by the FC-391 calibre with its 60-hour power reserve, the piece will comes with two interchangeable straps, as is the custom.