Abstract: Manual device for adjusting and/or controlling a function of a timepiece comprising a case 2 housing a horological movement, said manual device comprising a rod 3 and a retractable crown 4 mounted in said case, and such that the crown comprises a cylindrical body 16 having a blind cylindrical hollow 5 surrounding a tubular passage 6 designed to surround said rod 3 and connect it kinematically in rotation to the crown 4, at least one elastically deformable means 8 pushing the crown outwards relative to the case 2, the device comprising a base 10 in the shape of a cylindrical cover designed to be fixed into the watch case and traversed by said rod 3, and an indexing structure 11, 12, 13, 14, 15 attached to said base and making it possible to index an indexing ring 15 coupled translationally, but free in rotation, to the end of said tubular passage 6 of the crown, and making it possible, via successive applications of pressure to the crown, to move from a retracted or rest position to a working position.

Abstract: A clasp and a production method thereof. The inventive clasp includes at least one main element (1) and at least one element (3) which pivots in relation to the main element. The clasp is characterised in that each of the aforementioned elements (1, 3) includes two longitudinal arms which are rolled up to form a hinge (7, 15) . Moreover, at least one of the ends of one of the elements (1, 3) includes a flexion spring (11) which can rest against the other element (3, 1) for the elastic support thereof and each arm (5, 13) of the main element (1) and the pivoting element (3) is provided with at least one longitudinal stiffening rib (20, 22).