Timepiece including a power cell compartment closed by a gasket seal

A timepiece comprising:

• a watch case;
• a power cell compartment formed by a housing arranged in the interior of said case so as to receive through an entrance of the housing an electrical energy source formed by a power cell;
• and
• closing means for the entrance of the housing comprising movable cap means capable of being mechanically latched onto the case and a gasket seal shaped to be interposed between the cap means and said case,
• said gasket seal extending over the entire frontal surface of the power cell and assuring, in addition to the sealing of the housing, an axial bearing of the power cell towards the bottom of the housing,
• said gasket seal comprising a lip formed on the periphery of the seal and a cylindrical bearing surface adjacent to the lip,
• said lip being squeezed between a first and a second tapered bearing surface provided respectively on the case and on said cap means,
• and said cylindrical bearing surface of the seal being engaged in a corresponding cylindrical bearing surface formed on the case adjacent to the entrance of the housing to radially position the seal and maintain said lip in fixed relation with respect to said first tapered bearing surface.