Method of assembling a timepiece comprising a watch movement and a water-resistant case, the method comprising: a first stage of closing the case by fitting and securing a first case element, more particularly a back, and then a second stage of closing the case by actuation of a second case element, more particularly a stem, in particular a winding stem or a valve stem or a push-button stem, the second case element being mobile between a first configuration, in which a fluid communication between the interior of the case and an environment outside the case is permitted, and a second configuration, in which the fluid communication between the interior of the case and the environment outside the case is limited, the second stage of closing being an actuation of the passage of the second element from the first configuration to the second configuration.

A device (100) for testing a timepiece, including a case (1) receiving calottes (200) or watch heads (300), each calotte (200) enclosing a movement (400) and its projecting control member. The case (1) includes, removable and stackable on top of one another, a back, a frame (90) including at least one measuring support (500) forming a lower support for a calotte (200) or watch head (300), and an upper portion including a cover (10) with a locking element (16) for compressing an upper resilient element (80, 83) and holding each calotte (200) and/or each watch head (300). Each measuring support (500) is supported by a sole made of a resilient material (921) and carries an internal running sensor (510). Each movement (400) of the case (1) is phonically isolated from the other movements (400) by other resilient elements in the case (1).

A horological calotte (200) forming a casing for a horological movement (400) according to a calibre model in a predetermined family. The movement includes a projecting control member (410) whose distal part (411) is distant from a movement axis (DM) by a radial value (VR) specific to the model. The calotte includes a ring (220) specific to the model, which is fitted in a single angular position with a bottom (210) and a cover (230) to enclose the movement (400). Its outer shape is identical for each calibre, with reference shoulders (240) defining a calotte axis (DC). The ring offsets the movement axis relative to the calotte axis in the radial direction (DR) of the control member (410), by a value such that the distal part (411) is distant from the calotte axis by a predefined value (VP) identical for all calibres of the family.

A testability method (500) for testing the operation of a thermoelectric element (110) of a thermoelectric watch (100) including the thermoelectric element (110), a power circuit supplied by primary storage elements (101) and secondary storage elements (102) so as to move at least one moveable element (190) or display information on an electro-optical display device. The testability method (500) includes steps of applying a heat source (540) to the thermoelectric element (110) so as to make it possible to electrically charge (550) or recharge (550) the secondary storage elements (102) in order to move at least one moveable element (190) or display information on an electro-optical display device, and thus check the functionality of the thermoelectric element (110).

A device that tests the chronometric precision of a watch movement or a watch includes a control device controlling a predefined cycle of motions passing through standard chronometric test positions, and a fine control device including a sequencer arranged to control the changes of chronometric test position of this movement, or respectively of this watch, in a multi-position sequence, after each measurement per position, and to start another multi-position sequence as soon as the preceding sequence finishes and which observes the predefined total duration of one cycle of several successive multi-position sequences. This sequencer is also arranged to manage the rate stabilisation durations, durations of measurement per position, and multi-position sequence durations.

The presentation case is arranged for receiving an electromechanical watch provided with a stepping motor for driving the watch hands. The presentation case includes a box with a support for receiving the watch, a system for detecting the position of the hands, means for resetting the watch, connected to the hand position detection system, and configured to reset the watch on the basis of information received from the hand position detection system and a time reference, when the watch is placed on the receiving support. The resetting means include a drive means for the stepping motor of the electromechanical watch, which is arranged inside the presentation case facing the stepping motor, when the watch is placed on the receiving support, and is configured to cause a rotation of the stepping motor by inductive coupling.

A chronometric testing or chronometric certification method for a timepiece (1), comprising at least two status reports of the timepiece before and after at least a first static storage cycle in one or multiple predefined positions of the timepiece, said first static storage cycle comprising at least a first inclined position () of the timepiece.

A chronometric testing or chronometric certification method for a timepiece (1), comprising at least two status reports of the timepiece before and after at least a first static storage cycle in one or multiple predefined positions of the timepiece, said first static storage cycle comprising at least a first inclined position () of the timepiece.

A horological calotte (200) forming a casing for a horological movement (400) according to a calibre model in a predetermined family. The movement includes a projecting control member (410) whose distal part (411) is distant from a movement axis (DM) by a radial value (VR) specific to the model. The calotte includes a ring (220) specific to the model, which is fitted in a single angular position with a bottom (210) and a cover (230) to enclose the movement (400). Its outer shape is identical for each calibre, with reference shoulders (240) defining a calotte axis (DC). The ring offsets the movement axis relative to the calotte axis in the radial direction (DR) of the control member (410), by a value such that the distal part (411) is distant from the calotte axis by a predefined value (VP) identical for all calibres of the family.