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6
WARNING
Use the specified battery, battery charger, AC adapter, and USB
cable.
Using a battery, battery charger, or AC adapter other than the specified ones may
cause a fire, explosion, damage, or liquid leakage.
Do not use this device continuously for a long period of time.
To use this device, take appropriate breaks on a regular basis.
Do not use this device with a high volume for a long period of
time.
Prolonged use with the volume on high may cause hearing impairment. In addition, you
may not be able to hear important surrounding sounds such as alarms, horns, sirens,
etc.
Adjust the volume immediately after turning the power on.
A loud sound may be emitted, which may cause hearing loss.
If you feel the main unit (HMD or NBC) is hot, stop using this
device and remove it from your body.
Depending on the usage environment, the temperature of the main unit may rise if it is
used for a long period of time. If you continue to use the device, low-temperature burns
may result.
If you feel any abnormalities in the main unit or your body, stop using this device.
Do not use or charge this device in extremely hot, cold, or humid
locations.
Use this device within the ambient temperature range of -20°C to 50°C and the humidi-
ty range of 30% to 90%.
Using it in an environment outside the above-mentioned ranges may cause a deforma-
tion, damage, or ignition.
If the device emits smoke, strange odors or sound, or excessive
heat during use or charging, take the following measures:
During use: Stop using this device, and remove the batteries from the NBC.
While charging using the charger: Unplug the AC adapter from the outlet and remove
the batteries from the charger.
While charging using the power supply port: Unplug the USB cable from the outlet and
remove the batteries from the NBC.
If you continue to use this device under such conditions, the battery may burst and
cause a fire or burns.
In addition, if the device is dropped or damaged, stop using it and contact us.
Do not use this device outdoors when there is thunder.
Summary of Contents for InfoLinker3
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