The Ring of Obedience is a literal ring that is placed over a man's penis.
A Ring is set to respond to the comand of a specific witch and will deal out an extremely painful- and possibly lethal- punishment if activated. Often used during the reign of Dorothea and Hekatah , rings were placed on slaves and servants to keep them obedient. They were most often placed on males of a higher Jewel rank than the witch controling them in order to ensure their obedience.
The ring cannot be removed by the male. Instead it can only be removed by a healer.