FC 910 ("Heartbeat") is a calibre by Frederique Constant.
Mechanical movement with manual winding, power reserve more than 48 hours.
After more than two years of development in cooperation with leading experts Frederique Constant presented the calibre "Heartbeat". It has the peculiarity that through a dial opening at 6 o'clock a free look at the balance wheel is possible. The new movement, all realized in Switzerland, is the subject of various patents.