Note: The M Listening Check requires a charged
power source to function correctly. If the power source
being used to conduct the listening check has been
depleted to an inadequate charge level, the user will
not be able to complete the task. If the user attaches
a discharged rechargeable M Battery or a discharged
M Zn-Air Battery Pak, no sound will be heard through
the Listening Check Earbuds.
CARE AND MAINTENANCE
Storing the M Listening Check
Store the M Listening Check in the box or case provided.
Cleaning and Maintenance
Wipe the outside of the M Listening Check with a soft,
dry cloth. Do not insert foreign objects into the M Listening
Check in an attempt to clean it. If the M Listening Check
is exposed to humidity or moisture, it may be necessary to
dry it with a drying system.
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