s Health & Beauty Care Super Mini Aid Sound Adjustable Tone Hearing Aids Portable Ear Hearing Amplifier for the Deaf Elderly

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Note 1

Adjust volume to the minimum before wearing

2

Choose an earplug of slightly bigger size to avoid whistler

3

Increase volume gradually to avoid sudden increase in sound

4

If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage

5

Keep the ear plug clean 6

Remove the battery if you don't use it for long time

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