One of the greatest achievements to which any watchmaking company can aspire, is to create and produce its own calibers. In the past eleven years, Frederique Constant has managed this achievement with not one, but four calibers in its Manufacture Series of watches. Our company is one of the very few Swiss watch manufacturers that can actually claim to produce and use its own calibers inhouse, a fact which is even more amazing considering that Frederique Constant is a completely individual, familyowned business, not part of some giant, faceless corporation. No Fields Found.