Plastic watch case covered with two metallic half shells

A wristwatch, comprising:

• a bracelet or strap;
• a plastic case including a case middle-bezel, a watch crystal, a back cover, and two pairs of horns to which two ends of the bracelet or strap are respectively attached;
• a top half shell made of metal covering the top of the case and a portion of the case middle, and having an opening revealing the crystal;
• a crown or a control push-button protruding from the case middle;
• and
• a bottom half shell covering the back cover and a portion of the case middle,
• wherein the top half shell and the bottom half shell respectively have two, substantially symmetrical, peripheral rims and which extend facing each other, the crown or the control push-button being located in an elongated space extending between the rims of the two half shells, and the elongated space also revealing a portion of the case middle, and
• wherein the elongated space extends continuously between a first horn of the two pairs of horns and a second horn of the two pairs of horns, the first horn being located on an upper right portion of the case and the second horn being located on a lower right portion of the case.