Portable electronic device capable of processing information, said portable electronic device including a body arranged to be capable of being secured to the user, and at least one electronic assembly for processing information, the body of the portable electronic device being formed by a layer of plastic material which gives the portable electronic device a shape and thickness, characterized in that the portable electronic device includes a first impermeable plastic film which serves as a coating for the layer of plastic material, and a second impermeable plastic film secured to the periphery of the first impermeable plastic film, and in that the electronic assembly for processing information is arranged between the first and second impermeable plastic films. The invention also concerns a method of manufacturing a portable electronic device.

A watch case includes a case middle made of plastic or electroformed material and a crystal. The crystal or the case middle includes elbowed catches that are each insertable in a bayonet fitting in a recess of the case middle or the crystal. The case also includes a rotation stop angularly securing the case middle and the crystal in an angular position such that a part of each catch is frontally locked behind a holding surface of the case middle or of the crystal. The rotation stop is frontally snap-fitted on the case middle and/or the crystal by snap-fit fingers that cooperate with a complementary stop surface of the case middle and/or of the crystal.

A carbon fiber watch case includes a main body structure and a conductive structure. The main body structure has an inner surface and an outer surface. The conductive structure has a first contact on the inner surface and a second contact on the outer surface to electrically connect the inner surface and the outer surface of the carbon fiber watch case. The main body structure includes a braided body and a polymer body. The braided body includes a carbon fiber, and the braided body has a network-like structure. The polymer body at least fills a gap of the network-like structure of the braided body so that the braided body and the conductive structure form an integrated structure.

A support frame for a sintering step of a method for producing a part, in particular for watchmaking, from a green body having an initial shape, the body shrinking from the initial shape to a final shape during the sintering step, the support frame having at least one face for supporting the body during the sintering step, wherein the geometry of the supporting face is in relief and configured to support the body from its initial shape into its final shape, so that it retains its shape and proportions in line with a shrinkage coefficient related to the sintering operation. The disclosure further relates to a sintering method using this support frame.

A watertight watch case (1) including a middle (2), a back (3) and a sealing joint (4) disposed between the middle (2) and the back (3), the middle (2) and the back (3) being made of a ceramic material having a hardness greater than or equal to 1600 HV10, the middle (2) including a lower face (2a) and the back (3) including an upper face (3a), the lower and upper faces (2a, 3a) facing each other and serving as bearing surfaces for the sealing joint (4), the watertight watch case (1) wherein the lower and upper faces (2a, 3a) are formed by a set of concentric scratches (5). Also, a method for finishing the watertight watch case, which method comprises a satin-finishing step to obtain the set of concentric scratches (5).

A cover structural body including a cover member through which at least visible light passes and which is provided with at least one first positioning mark portion that absorbs visible light, a semi-light-transmissive layer which is provided below the first positioning mark portion while extending around the first positioning mark portion in a planar view from a certain direction, through which light of certain visible wavelength bands passes, and by which light of other visible wavelength bands is absorbed, and a cover target member which is provided under the semi-light-transmissive layer, and in which at least one second positioning mark portion where visible light passes through is provided at a portion to be covered by the first positioning mark portion in the planar view from the certain direction.

A case device according to an aspect of the present disclosure includes: an inner case; an outer case; a plating film formed on an appearance portion visible from outside on a surface of the outer case; and a cover member, wherein the outer case is made of a second material that is a plating-targeted material on which the plating film is formable, the inner case is made of a first material that is a non-plating-targeted material on which the plating film is less easily formed than the second material, and the inner case is covered with the outer case and the cover member.

A method may produce a ceramic part with a mother-of-pearl effect, in particular for watchmaking. Such methods may include: forming a ceramic body; depositing a layer of an oxy-nitride component of the OxNy type on at least a portion of the ceramic body; and oxidizing at least a portion of the oxy-nitride layer, preferably by heating.

An external part element or component for a timepiece or piece of jewellery made with a fibre-reinforced polymer matrix composite material, this external part element including on at least one of the faces thereof at least one cavity wherein an insert made of metallic glass is housed. A method for manufacturing such an external part element is also described.

Provided is a timepiece including, in addition to a crystal, the following external elements: a back (2), a middle part (1), a dial (3), and two bracelet strands (30), at least one of these external elements includes a body formed of a first portion made of a first opaque material and of a second portion made of a second partially transparent or translucent material. The first material being integral with the second material and the timepiece also includes at least one light source (10) producing light which passes through the second portion made of a partially transparent or translucent ceramic material comprising zirconia.