A case (2) for a wristwatch (1) including: a middle part (4) including a wall (10) having two attachment areas (12) of the bracelet (24) disposed on either side of a plane (P) transverse to the middle part (4) substantially perpendicular to a back (20) of the case (2); two horns (6) capable of ensuring the complete attachment of the bracelet (24) to the middle part (4) by being connected to different ends of this bracelet (4), said horns (6) being removably and slidably attached to said attachment areas (12), and the back (20) attached to a mounting area (21) of the case (2) participating in blocking the horns (6) in translation in a direction of sliding (D) on the middle part (4) parallel to a central axis (A) of the case (2).

A timepiece and a tool to separate a back from a middle, which jointly delimit a watch case of this timepiece, inside which a horological movement is housed, this tool having the appearance of a wedge, i.e. an acute-shaped part formed by a first face and a second face which intersect at an angle of less than 90° and which are connected to one another by a rounded portion, the first face of the tool being oriented such that it extends parallel to a mean plane wherein the horological movement is located when an horologist engages this tool between the back and the middle in order to separate this back from this middle, the rounded portion being connected to the second face by a curved portion, the curvature whereof is directed towards the inside of a surface delimited by the first and second faces.

A timepiece display device comprises a timepiece body, a support plate, a timepiece driving module, a rotating optical disc, a magnetic element, a top plate, and a rotating shaft of the timepiece driving module passes through the support plate and connects to the center of the rotating optical disc to drive the rotating optical disc to rotate; a display comprises an annular base mounted in the upper chamber of the timepiece body, a dial mounted inside the annular base, an indicator element placed on the dial and corresponding to the time identifier on the dial, and a crystal covering the upper end of the annular base. The indicator element and the magnetic element are positioned by the magnetic attraction of the magnetic element, and the indicator element moves synchronously with the magnetic element to indicate the time.

A professionally customizable timepiece includes a primary casing including a movement and configured to operate independently as a timepiece, and a secondary casing having an interior space for receiving the primary casing and further design elements. The secondary casing completely encloses the interior space and can be opened without tool for placement of the primary casing and/or design elements into the interior space or to remove them from there. The secondary casing includes a sight glass and is configured to secure the primary casing at a selectable position in the interior space.

A case including a case member having a back cover attached thereto, and a cover member which is arranged on a side of the back cover opposite to the case member side while covering an outer circumferential surface of the case member and on which band attachment sections are provided corresponding to the outer circumferential surface of the case member.

A watch case including a middle defining a peripheral track; a rotating bezel; a toothed crown; a structure for detachably fastening the bezel on the middle with the possibility of axial clearance, the fastening structure includes a band supporting radially projecting fins, each capable of engaging with a bayonet formed in the middle; a coupling system including a male part and a female part, one of which is integral with the bezel and the other one of which is integral with the fastening structure, with this coupling system being able to adopt a decoupling configuration, in which the male part and the female part are decoupled, and a coupling configuration, in which the male part and the female part are coupled.

A device for attaching a bracelet or strap to a watch case includes a bar secured to the watch case by at least one horn and an insert integral with the end of the bracelet. The bar and the insert are complementary in order to cooperate by fitting one inside the other to form a removable assembly to make the bracelet interchangeable. The bar is formed by a cylindrical arbor having at least one flat portion. The flat portion cooperates by fitting with a housing made in the insert. The housing has a substantially rectangular opening for receiving the flat portion. The bar includes a control member for pivoting the bar from a first position A, in which the insert is positioned on the arbor, to a second position B, in which the insert is locked onto the bar.

The invention provides a watch that facilitates replacement of a watch core and a bezel, comprising a watch case provided with a connecting bezel on a front side thereof, wherein a first connecting block is disposed at the top of the watch case, a second connecting block is disposed at the bottom of the watch case, and a back watch cover is rotatably connected to a back side of the watch case. This design mode enables users to disassemble the watch core by themselves without using any tools, which is convenient for replacement.

A clockwork module (100) including (i) a mobile part (11) including a first functional part and a second functional part (11a, 11b) and an arbor (15), (ii) a spring (13), (iii) a casing (14) including a housing (140), (iv) a first guide surface (14a, 140a) in the housing (140), (v) a first stop (140b) in the housing, (vi) a second stop (16b) arranged on the mobile part (11), the arbor (15) being guided by the first guide surface, the spring being arranged in the housing between the first and second stops.

A clockwork module (100) including (i) a mobile part (11) including a first functional part and a second functional part (11a, 11b) and an arbor (15), (ii) a spring (13), (iii) a casing (14) including a housing (140), (iv) a first guide surface (14a, 140a) in the housing (140), (v) a first stop (140b) in the housing, (vi) a second stop (16b) arranged on the mobile part (11), the arbor (15) being guided by the first guide surface, the spring being arranged in the housing between the first and second stops.