WF-1000XM4
Wireless Noise Canceling Stereo Headset
Reference Guide
©2021 Sony Corporation
Printed in Malaysia
https://www.sony.net/
https://rd1.sony.net/help/mdr/
wf1000xm4/h_zz/
5-027-982-61(1)
Precautions
The two-dimensional code or the URL on the cover will help
you access the help guide that describes useful notes or
procedures in details.
On water resistant of the unit
• The charging case is not water resistant.
• Unless the unit is used correctly, water may get into the unit and
cause fire, electrocution, or malfunctions.
Note the following cautions carefully and use the unit correctly.
To maintain water resistant performance
Carefully note the precautions below to ensure proper use of the
unit.
• Do not splash water forcibly into the sound output holes.
• Do not drop the unit into water, and do not use underwater.
• Do not allow the unit to remain wet in a cold environment, as the
water may freeze. To prevent malfunction, make sure to wipe off
any water after use.
• Do not place the unit in water or use it in a humid place such as a
bathroom.
• Do not drop the unit or expose it to mechanical shock. Doing so
may deform or damage the unit, resulting in deterioration of
water resistance performance.
On BLUETOOTH® communications
• Microwaves emitting from a Bluetooth device may affect the
operation of electronic medical devices. Turn off this unit and other
Bluetooth devices in the following locations, as it may cause an
accident:
– in hospitals, near priority seating in trains, locations where
inflammable gas is present, near automatic doors, or near fire
alarms.
The nameplate and important information concerning safety are
attached in the following locations:
• the bottom of the charging case
Do not install the product in a confined space, such as a bookcase or
built-in cabinet.
Do not expose the batteries (battery pack or batteries installed) to
excessive heat, such as sunshine, fire or the like for a long time.
Do not dismantle, open or shred secondary cells or batteries.
Do not expose cells or batteries to heat or fire. Avoid storage in direct
sunlight.
In the event of a cell leaking, do not allow the liquid to come in contact
with the skin or eyes. If contact has been made, wash the affected area
with copious amounts of water and seek medical advice.
Secondary cells and batteries need to be charged before use. Always
refer to the manufacturer’s instructions or product manual for proper
charging instructions.
After extended periods of storage, it may be necessary to charge and
discharge the cells or batteries several times to obtain maximum
performance.
Dispose of properly.
High volume may adversely affect your hearing.
Do not use the unit while walking, driving, or cycling. Doing so may
cause traffic accidents.
Do not use in hazardous areas unless the surrounding sound can be
heard.
If water or foreign matter enters the unit, it may result in fire or electric
shock. If water or foreign matter enters the unit, stop use immediately
and consult your nearest Sony dealer. In particular, be careful in the
following cases.
• When using the unit near a sink or liquid container
Be careful that the unit does not fall into a sink or container filled with
water.
• When using the unit in the rain or snow, or in humid locations
For details on the effects of contact with the human body from the
mobile phone or other wireless devices connected to the unit, refer to
the instruction manual of the wireless device.
If the earbud tips are not securely attached, they may fall off and
remain inside the ear during use. Make sure that the earbud tips are
securely attached before use.
Never insert the USB plug when the unit or charging cable is wet. If the
USB plug is inserted while the unit or charging cable is wet, a short
circuit may occur due to liquid (tap water, seawater, soft drink, etc.) or
foreign matter on the unit or charging cable, and cause abnormal heat
generation or malfunction.
This product (including accessories) has magnet(s) which may interfere
with pacemakers, programmable shunt valves for hydrocephalus
treatment, or other medical devices. Do not place this product close to
persons who use such medical devices. Consult your doctor before
using this product if you use any such medical device.
This product (including accessories) has magnet(s). Swallowing
magnet(s) could cause serious harm, such as choking hazard or
intestinal injuries. If magnets (or a magnet) were swallowed, consult a
doctor immediately. Keep this product away from children or other
supervised individuals to prevent accidental ingestion.
There is a danger that this unit or its small parts may be swallowed.
After use, store the unit in the charging case and store in a location out
of reach of small children.
Note about static electricity
If you use the unit when the air is dry, you may experience discomfort
due to static electricity accumulated on your body. This is not a
malfunction of the unit. You can reduce the effect by wearing clothes
made of natural materials that do not easily generate static electricity.
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