The text of the card mentions the back, feet and palms, as well as the Zakharyin–Head zones and individual muscles; the diagram of the zones is given in a drawing that is not in the text. The card does not name areas where it must not be used, or contraindications.
General information (not a manufacturer's instruction): a needle applicator is not placed on damaged or inflamed skin; if in doubt, a doctor's consultation is needed.