⛑Nano Protection: Signi/Connexx utilizes nanotechnology in designing the Nanocare Wax Guard 3.0 to provide enhanced protection against earwax and debris, prolonging the life of the hearing aid. ⛑Disposable Filter: Signi/Connexx Nanocare Wax Guard 3.0 is a disposable filter designed to protect the receiver (speaker) of your Signi/Connexx hearing aids from earwax and debris.

★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.