Phonak retention locks for Standard, Medium, or Power Audeo Marvel hearing aid receivers (choose size from drop down).
These locks help keep the receiver wire snug in place in the ear canal while the users go about daily activities.
Please note for hygiene reasons this product is excluded from the Hearing Planet return policy.
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| Option | Inv |
| Standard Receiver | 21 |
| Medium Receiver | 31 |
| Power Receiver | 31 |
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