The Frederique Constant caliber FC-303 (sometimes written FC303) is a Swiss made automatic movement with 26 jewels. It is essentially a Sellita caliber SW200-1 (ETA 2824-2 clone) with “Frederique Constant” engraved on the rotor.
The typical FC-303 watch will not be COSC, but Frederique Constant does sell FC-303 powered watches with certified chronometer status (such as the Highlife Automatic COSC). Models with this movement which are COSC certified will usually have “Certified Chronometer Automatic” written across the dial.
Watches with this movement:
The example movement featured on this page was found in a limited edition Vintage Rally Healey watch. It has a plastic movement holder inside. The FC-303 is used in a wide lineup of FC watches. Please add yours to the comments.