Abstract: A housing (20) provided with a flexible cord (10) for connecting said housing to a living object or to an inanimate object, said housing receiving a plug (30) including two through cavities (31A, 31B) each of which receives a tag (11A, 11B) fixed to a corresponding end of the flexible cord, said housing including two shoulders (24A) each serving as an abutment for a corresponding one of the tags, said abutments ensuring, once the plug has been fully inserted into the housing, that both ends of the cord are definitively retained in the housing, said housing further including an abutment (34) defining an end-of-insertion position for the plug.