Abstract: Disclosed herein is a neurostimulation system for treating head pain, the system comprising: an implant unit configured for implantation inside a subject's (700) body; an external unit configured for a location external to the subject's (700) body; and a charging and programming unit; wherein the external unit comprises: a processor; a power source (220); and a primary transmission unit (230) in electrical communication with the power source (220) and the processor; wherein the implant unit comprises: at least one lead (310); at least one pair of modulation electrodes (320) attached to the at least one lead (310); and a secondary transmission unit (330) in electrical communication with the at least one lead (310); and wherein the processor is configured to establish a coupling between the primary transmission unit (230) and the secondary transmission unit (330) and to transmit power from the power source (220) to the implant unit via said coupling.