A portable electronic device configured to be positioned on a users wrist, the portable device being configured to perform an electrocardiogram, ECG, the portable electronic device includes a watchcase, a case back, configured to be at least partially in contact with the skin of the wrist, a glass, a bezel, mounted on the watchcase and surrounding the glass, movable in rotation with respect to the watchcase, a first ECG electrode, made of conductive material, on the case back and configured to be in contact with the skin of the wrist, a second ECG electrode, made of conductive material, on the bezel, an ECG electronic module, electrically connected to the first ECG electrode and the second ECG electrode, and configured to receive and process electrical signals from a user and retrieved by the ECG electrodes, to perform an electrocardiogram.

Sub-assembly of external parts for a watch, comprising a water-resistant joint between a first and a second component, which are screwed, one on the other, the first component supports a first inclined toothing, which cooperates with a second inclined toothing of the second component, the first component or second component, or a second ring interposed between them comprises a zone which is elastically deformable under the action of a relative rotation between the first and the second component which is caused by an external force, and the deformation range of which allows compression of the elastically deformable zone allowing clearance of the teeth tips during the relative rotation and a release of this zone, allowing return to cooperation of the tips and the hollows of the teeth in a new relative angular position.

Provided is a multicolour cermet and/or ceramic article, and in particular a bezel of a timepiece, made by a method for injecting at least two materials of distinct colours, said article comprising a relief decoration of a colour different from the rest of the article, said decoration being made by laser ablation after injection of the two materials.

A timepiece includes an inner rotating ring including a plurality of teeth portions; a driving crown including a head portion and a shaft portion; and a driving wheel including a hole portion engageable with and disengageable from the shaft portion, and configured to mesh with the teeth portions. The hole portion includes a plurality of protruding portions disposed at intervals of an angle smaller than 90° and protruding toward a rotation axis of the shaft portion.

A diving watch includes a first device for displaying the current time and a second device for analogically displaying a diving duration. The second device includes a hand dedicated to the indication of a diving duration and a rotating bezel provided with a visible face including a time scale including time graduations. The bezel cooperates with the dedicated hand, in particular continuously animated with a uniform rotational movement, by displaying an instant value of the diving duration.

Provided is a watch case (10) that includes a middle (11) to which are attached a crystal (12) and a back (13) delimiting an internal volume in which is arranged a horological movement (14) intended to drive indicating members. The case (10) also includes a mechanism for actuating an indicator (16) capable of moving in rotation and housed inside the internal volume of the case (10), the actuation mechanism including a bezel (15) capable of moving in rotation and intended to be handled by a user, and a transmission pinion (17) arranged such that it meshes with the bezel (15) and the indicator (16), the respective axes of rotation of the bezel (15), the transmission pinion (17) and the indicator (16) being parallel to one another.

A watch spring (1) for a first component (2), more particularly for a bezel or for a case middle or for a case back, intended for the detent of the first component (2) relative to a second component (3), the spring (1) comprising at least one first connecting element (10a) intended to interact with at least one second connecting element (20b) provided on a component (2b) of the first component so as to connect the spring and the component, the at least one first connecting element comprising at least one elastic connecting arm (10a) extending in a first direction (D1), the at least one first connecting element being intended to receive a force (F) for driving the first component relative to the second component in the first direction or substantially in the first direction.

A bezel (1) for a timepiece, including an annular slot (2) with a bottom (20) and two walls (21, 22), wherein a ring made of a luminescent material (3) is disposed on the bottom, the ring (3) being topped by a second ring (4) made of a mineral material occupying the volume of the slot. The bezel (1) includes in each of the two walls (21, 22) a seal (5, 5′) cooperating with the second ring (4).

The present application discloses an electronic wristwatch with an easily adjustable rotating crown, comprising a watch case, and one side of the watch case is provided with a bezel, the other side is provided with a bottom cover, and the watch case is provided with a movement, the external side of the watch case is provided with a circular operation hole, and an adjusting gear is provided in the circular operation hole, the adjusting gear comprises a circular disk, and the side edge of the circular disk, which is close to the movement, is provided with a tapered row of teeth 1 along the circumferential direction, the side of the circular disk, which is away from the movement, is provided with a connecting post, and the free end of the connecting post is provided with a threaded post, the connecting post is externally sleeved with a crown tube.

A control device (1) for a timepiece has: - a body (4) intended to be mounted to be able to rotate about an axis of rotation (X) in a case middle (2) of a timepiece in order to drive a mechanism of the timepiece, and: - a crown head (5) movable in translation with respect to the body, parallel to the axis of rotation, between a first position and a second position. The body has a first coupling means (46) and the crown head has a second coupling means (53), arranged so that when the crown head is in its first position, the body and the crown head are uncoupled, and when the crown head is in its second position, the body and the crown head are coupled, the control device further comprising a locking element (6), a first formation (47A) and a second formation (47B), the locking element being able to cooperate with the first formation to stabilize the crown head in its first position, and with the second formation to stabilize the crown head in its second position, the locking element being integral with or fixed to the crown head and the first and second formations being integral with or fixed to the body, or the locking element being integral with or fixed to the body and the first and second formations being integral with or fixed to the crown head.