A pressure-relief valve (1) including: a tube (2) intended to be fastened to a watch case, a recessed head (3) mounted movable in rotation and in translation about and along the axis of the tube (2), the head (3) being able to adopt a first axial position where a gas flow could be performed between the inside and the outside of the watch case and a second axial position where this gas flow is prevented, a first insert (4) mounted within the recess of the head (3), the valve (1) being wherein the head (3) is mounted on the tube (2) via the first insert (4) and wherein the head (3) is fastened to said first insert (4) by a screw thread and/or a glue.

A decorative, wearable system includes at least one decorative element mechanically and moveably suspended in a liquid by mechanical fixation elements. The liquid shares a substantially similar refraction index as at least one of mechanical fixation elements.

A decorative, wearable system includes at least one decorative element mechanically and moveably suspended in a liquid by mechanical fixation elements. The liquid shares a substantially similar refraction index as at least one of mechanical fixation elements.

Watch with quartz movement with oil bath lubrication, comprising a case body (2) arranged between a transparent cap (3) and a closure element (18) so as to delimit a fluid-tight capsule (1) in an oil bath; a dial (11) arranged inside the capsule (1) below the cap (3); a motor body (10) arranged inside the oil bath capsule (1) and comprising an electrically powered motor for performing the movement of the watch and gears (12) for transmitting the movement to the dial (11); a seat (13) arranged externally and fluid-tight with respect to said capsule to house an electric battery (8) for powering the motor.

Watch with quartz movement with oil bath lubrication, comprising a case body (2) arranged between a transparent cap (3) and a closure element (18) so as to delimit a fluid-tight capsule (1) in an oil bath; a dial (11) arranged inside the capsule (1) below the cap (3); a motor body (10) arranged inside the oil bath capsule (1) and comprising an electrically powered motor for performing the movement of the watch and gears (12) for transmitting the movement to the dial (11); a seat (13) arranged externally and fluid-tight with respect to said capsule to house an electric battery (8) for powering the motor.