A watch including a watch case provided with a case middle, the case middle carrying an element provided with at least one index and defining an inner cavity. The watch further includes at least one pair of electrodes and at least one light source device connected to the electrode pair and arranged opposite the index, the electrodes of the electrode pair being fixed inside the inner cavity, the element being water permeable such that, when the watch is immersed in seawater, the seawater can penetrate the inner cavity so that the electrode pair and the seawater form an electrochemical cell, for powering the light source device.

A timepiece component for a timepiece case or for a timepiece includes a first ring, at least one decorative and/or display element, a second ring, and an elastic element mounted so as to bear on the first ring and to urge the at least one decorative and/or display element toward the second ring.

The invention relates to a timepiece comprising at least an hour indicator, a minute indicator, a movement arranged to drive the hour indicator and the minute indicator, a dial, a crown and an indicator for at least one time zone, housed inside a first case. According to the invention, the first case is rotatable inside a second case about an axis of rotation, so that a rotation of the first case in a clockwise or anticlockwise direction with respect to the second case allows a time zone to be chosen and the time in the selected time zone to be indicated.

An annular rotating bezel system intended to be rotatably mounted on a middle part of a watch case inside which is housed a timepiece movement which extends in a plane, including a rotating bezel, an annular holding ring, a toothed ring, and at least one elastic arm of which a free end is elastically and radially meshed with the toothed ring, said toothed ring and said at least one elastic arm being held in an axial direction perpendicular to the plane of the movement in the bezel by the annular holding ring, either the toothed ring or the elastic arm being arranged to be angularly joined to the rotating bezel, and other being arranged to be angularly joined to the case middle; wherein the elastic arm is formed of a flat strip-spring mounted in a cantilever arrangement in the system.

An annular retaining ring for a rotating bezel system, intended to cooperate with an external cylindrical surface of a case middle part of a watch case to allow rotation of the rotating bezel on the case middle, the annular ring including a device for guiding rotation of the rotating bezel around the case middle; wherein the annular ring further includes a device configured to brake rotation of the rotating bezel around the case middle and to dampen sound.

An annular rotating bezel system to be rotatably mounted on a case middle of a watch case inside which is housed a timepiece movement which extends in a plane, including a rotating bezel, an annular holding ring, a toothed ring, and a spring ring which extends in a plane in which it is capable of deforming elastically along a radius, the spring ring cooperating elastically with the toothed ring, the toothed ring and the spring ring being held in an axial direction perpendicular to the plane of the movement in the bezel by the annular holding ring, either the toothed ring or the spring ring being arranged to be angularly joined to the rotating bezel, and the other being arranged to be angularly joined to the case middle, wherein the spring ring has a thinned portion to increase the flexibility of the spring ring in its plane, the thinned portion having a tooth elastically and radially meshed with the toothed ring.

An external assembly element of a timepiece made from a first material, including a groove in which a communication circuit is arranged, wherein the communication circuit is over-molded with a polymer material filling the groove.

A spring (1) for a notching system, the spring including at least two elastic arms (11, 12), and a first toothset javomg first notching teeth (11a, 12a) disposed on each of the arms, the spring being designed such that, in a position in which one of the arms of the spring is not loaded, the arm is convex as seen from the top of the first notching tooth of this arm.

Frame comprising a case body (3) and a glass (13) rotatably mounted on said case body, in which at least one interior annular channel (26) is arranged between the glass and the case body and comprising at least one holding means (32) of the glass on the case body and, between the glass and the case body, a non-return means (35, 38), said means being arranged at least partially in said interior annular channel (26), in which frame the glass has at least one through passage (39), left free, for access to said interior annular channel (26), providing permanent communication of said channel with the exterior.

The Invention relates to the technical field of watches, and in particular, to a screw-bezel interchangeable watch, comprising a watch case, a watch mechanical rotational apparatus, and an energy-supply knob. A watch bezel and the watch case are tightly threaded and movably connected. An upper end surface of the watch case has a circular structure. A transparent lens with a smaller diameter is provided in the middle of circular structure. An annular decorative ring is disposed on an outer side of the transparent lens, several decorative rings are disposed, and the decorative rings have different decorative effects.