Patent ID: 8876371

Claim:
A watch case comprising: a middle having at least one opening, at least one element closing said at least one opening, the closing element being selected from (i) a bezel and/or a crystal, and (ii) a back, a resilient metal member linking the closing element and the middle, said resilient metal member being in the form of a ring or a continuous frame and having a recessed cross section defined by the profile of a non-rectilinear wall whose ends are attached to the periphery of said at least one closing element and to the periphery of the middle, respectively, wherein said resilient metal member includes at least one annular fold formed by a curvature, the arc of which describes an angle in a range of more than 90° and up to 180°, wherein ends of the arc of the curvature of the fold along the profile of the non-rectilinear wall are on opposite sides of a plane parallel to the plane of the at least one opening, and the fold protrudes in a direction parallel to the plane of the at least one opening with respect to both ends of the arc of the curvature of the fold.