★NOT compatible with: Phonak and Unitron hearing aids using SDS 4.0 receivers (Unitron Discover & Phonak Audeo Marvel and Paradise) that should choose CeruShield ; ReSound NP, HP and LP receiver wires should choose HF3 filters; Widex Fusion and Super SP and HP receivers with hard custom shells should choose Cerustop XL Wax Guards; all Starkey hearing aids, all Signia hearing aids.
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