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Open 4.0 Medium Domes (Ø9mm) are premium replacement hearing aid domes compatible with leading brands like Phonak and Unitron. Designed with an open vent for natural sound transparency and made from hypoallergenic silicone, these domes ensure comfort, durability, and enhanced audio clarity for mild to moderate hearing loss users.





| Best Sellers Rank | #40,734 in Health & Household ( See Top 100 in Health & Household ) #11 in Hearing Aid Domes |
| Customer Reviews | 4.7 out of 5 stars 647 Reviews |
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