Abstract: This fastening element for magnetically fastening an electronic module is configured to be fixed to a support, the support having a recess, the electronic module including a radioelectric antenna and a display screen, the radioelectric antenna having a characteristic wavelength, the display screen being visible through the recess when the fastening element is fixed to the support and fastened to the electronic module, the fastening element being configured to be fixed around the recess, wherein the fastening element comprises several portions, at least some portions being separate from each other by a respective gap for emission and/or reception of radio waves by the radioelectric antenna, and wherein at least one portion has a length depending on the characteristic wavelength.

Abstract: The garment comprises a supple-sheet support (100) including a cut-out (102) formed in an apparent region. The electronic module (200) is a flat module arranged on the inner side of the support, which comprises a flexible circuit supporting electronic components and a display (206). The support (100) comprises, around the cut-out and the surface thereof opposite to the panel, a peripheral band carrying a first magnetization pattern with ranges magnetized alternatively with a given magnetic polarity and with a reverse magnetic polarity. The module (200) includes at the periphery (204) thereof a frame of similar dimensions carrying a second reverse magnetization pattern, conjugated with respect to the first magnetization pattern, when the module and the support are arranged opposite to each other in the overlapping peripheral region.