Panasonic WH-R17C Operating Instructions Manual page 11

Do not let others use your hearing instrument.
Inappropriate use of a hearing instrument
can cause severe damage to the ear. Do not
let children play with the hearing instrument.
Keep the hearing instrument out of reach of
children.
WARNING
Do not disassemble, short-circuit, or expose
the zinc air battery to water or fire.
Failure to heed this warning may result in
leakage or explosion, which can lead to
injury or contamination of surrounding
factors.
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