Abstract: A regulator for a striking mechanism of a mechanical watch including a base, which can be assembled in a fixed manner with regard to the housing and which rotatably mounts a rotary wheel. At least two mass elements are arranged on the rotary wheel and by way of a rotation of the rotary wheel are deflectable radially outwards counter to a spring force on account of the centrifugal force, in order to regulate the rotation speed of the rotary wheel. At least three bearing elements are attached to the base, the bearing elements engaging peripherally on the rotary wheel, in order to mount this relative to the base.

Abstract: A metallic watch strap, including a first metallic strap half and a second metallic strap half. The first metallic strap half extending along a longitudinal direction and having an upper side and a lower side. The second metallic strap half having a folding clasp with a first fastening structure equipped to be fastened to the first strap half and with a second fastening structure equipped to be fastened to the second strap half. The first fastening structure has a slide, which, in a first state, is displaceable relative to the first strap half in a guided manner, and including a fixation element, which, in a second state, abuts on the first strap half. The first strap half has fixation indentations and the fixation element has at least one fixation projection fitting into the fixation indentations. In the second state, the fixation projection engages into one of the fixation indentations.

Abstract: A tourbillon (1) with a rotation cage which is rotatably arranged about a tourbillon axis is provided. The rotation cage mounts a balance wheel (3) and an escapement with an escape wheel (8) and a lever. The tourbillon is characterised in that the rotation cage comprises a bearing wheel (22) which is mounted by bearing elements (13) which engage peripherally on a running surface (11) of the bearing wheel (22).

Abstract: A date display device with an annual calendar function comprises the following elements: a drive wheel (8) which is coupled to a mechanical movement, a driving device which is driven by the drive wheel (8), a date wheel (4) which periodically interacts with the driving device and is driven by this and a month wheel (5) which is periodically interacts with the date wheel, as well as a month cam disc (6) which is connected to the month wheel. The driving device comprises a driver (8.1) and a rotation axis (8.3), wherein the driver moves on a path about the rotation axis (8.3) of the driving device and the rotation axis adopts at least two different positions relative to the date wheel (4), wherein in a first position, the driving device advances the date wheel by a single unit and in a second position by a plurality of units and wherein the adopted position depends on the number of days of the month concerned.