Genuine Phonak / Unitron Cap Dome 4.0 – Pack of 10

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Genuine Phonak Cap Dome 4.0 for compatible Phonak and Unitron hearing aids using the 4.0 coupling system. Pack of 10.SizeOne size.How to chooseUse only where your existing hearing aid fitting uses a Phonak Cap Dome 4.0. If you're unsure, check your current dome packaging or use our Compatibility Guide.CompatibilityUse only where the existing hearing aid fitting uses a Phonak Cap Dome 4.0.MaintenanceReplace domes regularly, or sooner if damaged, blocked or loose.Need help? Send us a clear photo of your current dome and hearing aid before ordering. Show more