Sony CRE-C10 Maintenance Information page 36

Health considerations
If soreness or skin irritation develops, discontinue wearing
your hearing aids.
Battery tips
If a battery is accidentally swallowed, seek medical attention
immediately, or call the National Button Battery Ingestion
Hotline collect at 1-800-498-8666.
Identification information
Your hearing aids have a serial number imprinted on them.
The location of the serial number will vary according to the
style of hearing aid you have chosen. Record the serial
number in your user guide for future reference.
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