Patent ID: 7385874

Claim:
A watch with a metallic case including an electronic module for storing data, which is housed at least mostly in a cavity open towards the exterior in an external surface of the watch, said cavity being of complementary shape to said module, said module being able to communicate via broadcast signals with a read and/or write apparatus for said data, said module including a base on which are mounted an integrated circuit chip having at least two bumps and a coil acting as a transmission and/or reception antenna, said coil being formed by an electrically conductive wire having two ends respectively connected to said bumps of said integrated circuit chip, said coil surrounding a space in which said chip is placed, wherein the base of the electronic module is a metallic element that conducts magnetic flux to insulate the module coil magnetically from the metallic case during data communication between a read/write apparatus and said module, and wherein said module and said cavity that is open towards the exterior housing said module define means for quickly and precisely positioning a complementary-shaped head of a read and/or write apparatus.