Graco BéBé Sounds Prenatal Heart Listener Manual Del Propietário página 9

Listening To Your Unborn Baby
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Remove the battery cover and install
a new 9-volt (6LR61) battery (not
included). We recommend using a
new battery as an old one will
severely interfere with the
performance of your Prenatal Heart
Listener®. Be sure to match positive
(+) to positive (+) and negative (-) to
negative (-).
Replace the battery cover.
Insert the headset plug into either jack
on the unit and put the headset on.
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