The present disclosure relates to a module (110) for relaying power wirelessly to a device implanted in a user (104). The module may include a structure (115) adapted to be worn by the user, a receiver (212) configured to receive a first wireless power transmission at a first frequency, a transmitter (216) configured to transmit a second wireless power transmission at a second frequency different from the first frequency, and a frequency changer (218) configured to convert energy generated by the first wireless power transmission into energy for generating the second wireless power transmission. Each of the receiver, transmitter and frequency changer may be disposed on or in the structure.
