A timepiece including a middle closed by a back cover and by a protective glass, the timepiece includes an anti-fogging device for the protective glass, the anti-fogging device including a layer of transparent conductive oxides provided at least on a portion of an internal surface of the protective glass; a thermal interface member, having a thermal conductivity greater than or equal to 1 W/m.Math.K, provided in the middle and configured to: a) ensure heat exchange by contact between the conductive oxide layer and the middle, the middle and the back cover being made of a thermally conductive material, or b) ensure heat exchange by contact between the conductive oxide layer and the back cover, the back cover including at least one part made of a thermally conductive material in contact with the thermal interface member.

A Dewar device (1) for mechanical and/or functional components (2) of a watch (3), the device (1) being provided with a bracelet and a casing (4) including an enclosure (5) in which a case (6) of the watch (3) is capable of being arranged and at least one fastening device (7) fastening the case (6) of the watch (3) inside the enclosure (5) of the casing (4) while keeping it away from the set of elements (10a, 10b, 10c) of the casing (4) defining this enclosure (5), the set (10a, 10b, 10c) including at least one transparent external element (10a) made of a transparent ceramic material, in particular a transparent polycrystalline ceramic material.

A flexible horological component for an oscillator mechanism of a horological movement, the component extending along a principal plane (P) and including at least a part made of a composite material (1), the composite material (1) including a matrix (2) and a multitude of nanotubes or nanowires (3) distributed in the matrix (2), the nanotubes or nanowires (3) being juxtaposed and disposed substantially parallel with an axis (A) substantially perpendicular to the plane (P) of the component, the matrix including a flexible filling material (4) to fill the interstices between the nanotubes or nanowires (3), the filling material (4) comprising at least in part a thermal compensation material wherein the thermoelastic coefficient (TEC) is of the opposite sign to that of the other materials of the composite material (1).

A temperature control device for a timepiece, includes a first light-transmitting portion, defining with a second adjacent portion an intermediate chamber of variable dimensions according to the temperature of the first portion, the first portion includes first microlouvers according to a first spatial distribution, the second portion includes second microlouvers according to a second spatial distribution and substantially facing the first microlouvers, to superimpose partially or totally in certain relative positions between the first portion and the second portion, in order to vary the transmission and/or the reflection of the incident light on the first portion between a maximum and a minimum.

A thermal protection case for timepiece, including, in a casing, a device for holding a case of a timepiece, including first elastic pistons with mobile supports each including at least one component thermally less conductive than the casing and the case and creating a thermal barrier between them, and opposite second supports each including a pillar each with at least one component thermally less conductive than the casing and the case and creating a thermal barrier between them constituting a fixed banking support, or by a second elastic piston including a second mobile support arranged to come to bear on the case and including at least one component thermally less conductive than the casing and than the case and creating a thermal barrier between the casing and the second mobile support.