The Empire style clock, in gilded bronze, has a rectangular base with a projecting plinth resting on four feet. The front is adorned with vegetal motifs, which frame, in the centre, an affectionate scene between Maria Luigia and the King of Rome and, at the two ends, classical profiles within floral wreaths. The case (made with lost wax casting) of real own clock, which has an unsigned dial enamelled in white and burnished eye hands, serves as a support for the small group formed by Maria Luigia with a high-waisted dress and Greek hairstyle, who holds the child King of Rome in her arms and rests feet on a curtain stool. On the right is a vase of flowers, on the left a harp whose structure ends with a swan's head decoration.