Hearing aid, senior hearing aid with noise reduction and volume control, rechargeable hearing aid for hearing loss, sound amplifier (silver).

OverviewQ&A
What causes whistling (sharp sound) and how to resolve it?
Cause: Whistling is usually caused by improper fitting of the hearing aid,
which creates a loop between the hearing aid and the ear canal, continuously amplifying the sound.
This could be due to the earpiece not matching the ear canal size or not fitting tightly enough.
Solution: To prevent whistling, choose an earpiece that matches the size of your ear canal and ensure it fits snugly to block the sound loop.
How to effectively maintain a hearing aid?
Storage environment: Keep the hearing aid in a safe place, away from heat sources and dust.
Cleaning and maintenance: Clean the hearing aid regularly according to the instructions to prevent earwax and ear canal secretions from damaging it.
Usage tips: Avoid using hairspray or other products that may produce powder near the hearing aid, as these substances may affect its performance.
When not using the hearing aid, ensure it is turned off to save battery and extend its lifespan.
Tips
Earpiece selection: Be sure to choose an earpiece that matches the size of your ear canal,
as gaps between the earpiece and ear canal may cause noise interference.
Wearing method: Use the correct wearing method to ensure the hearing aid fits tightly to the ear canal to avoid sound feedback and whistling.
Avoid touching the speaker: Do not touch the small speaker (receiver) on the hearing aid during use, as this may cause noise interference.
First-time use: When using a hearing aid for the first time, you may experience some noise issues. This is normal.
Please be patient during the adjustment period and avoid touching the hearing aid with your hands to prevent affecting its performance.