For all type of PHONAK / UNITRON/ HANSATON behind the ear RIC & Open Fit hearing aids and in the ear custom made. Genuine product ordered directly from Sonova Group: Unitron/ Phonak/ Hansaton. Phonak, Unitron, Hansaton, Vista, AudioNova, Audition Sante, Laperre, Geers, Vitakustik, Schoonenberg, Triton Hearing, Boots Hearingcare, Connect Hearing, Audium, Advance Hearing.