FREDERIQUE CLASSIC POWER RESERVE BIG DATE - FC-735N3H6BIG DATE The Classic Power Reserve Big Date Manufacture, bringing to life Frederique Constants thirty first Manufacture calibre, the FC 735. Its the first calibre from the firm to offer a big date, a moon phase and a power reserve indicator now for a total of 50 hours., The latter is indicated at 9 oclock by a slim, dedicated hand travelling along an arc marked out from 0 to 50, ending in a red zone warning that its time to wind the watch before it