Abstract: Packaging device for a fluid product, comprising a magnetic system for automatic relative positioning upon closure, comprising a first magnetic means (16) carried by the cap (3) and a second magnetic means (11) carried by the container (1), the first and second magnetic means facing one another when the container is in the closed position, the location of the poles of each magnetic means being determined with respect to the location of the external ornamental features, so as to automatically obtain the predetermined relative positioning of said external ornamental features upon closure of the container.