MiNi Hearing Aid Charging Digital Small Invisible Noise Cancelling Ear Sound

Why does the hearing aid have loud screeching sound ?. How to solve?. Choose suitable earplugs to keep the ear canal sealed. 2 In-Ear Hearing Aids. Cleaning: Wipe with a dry, soft cloth. Use a small brush to clean the earwax inside and around the sound hole of the hearing aid.

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