AEnglish
Wireless Stereo Headset
Model: YY2978
The term “product” in this document refers to the
unit or its accessories.
Without permission granted by the NCC, no
company, enterprise, or user shall change
frequency, enhance transmitting power or alter
original characteristics as well as performance of
approved low power radio-frequency devices.
The low power radio-frequency devices shall not
influence aircraft security nor interfere with legal
communications; If found, the user shall cease
operating immediately until no interference is
achieved.
The said legal communications refers to radio
communications operated in compliance with
the Telecommunications Management Act. The
low power radio-frequency devices must endure
interference from legal communications or ISM
radio wave radiated devices.
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
batteries.
Do not expose secondary batteries to heat or
fire. Avoid storage in direct sunlight.
In the event of a secondary battery 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 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
secondary batteries several times to obtain
maximum performance.
Dispose of properly.
Do not use, store, or leave in a place subject to
high amounts of humidity, dust, smoke, or
steam, or in a place subject to high temperatures,
such as near a fire or a location subject to direct
sunlight, such as in a car.
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.
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 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.
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.
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
• 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.
(Make sure that the USB Type-C port cover is
closed securely when you use the unit.)
To maintain water resistant
performance
Carefully note the precautions below to
ensure proper use of the unit.
• Make sure the USB Type-C port cover is
closed securely when using the unit. If there
is any foreign material on the cover or it is
not completely closed, the water resistant
performance cannot be maintained. Water
may get inside and cause the unit to
malfunction.
• 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.
On charging the unit
• Be sure to use the supplied USB Type-C cable.
• Make sure to close the USB Type-C port cover
securely after charging. Perspiration or water
may cause damage (Fig. ).
Notes on wearing the unit
• After use, remove the headphones slowly.
• Do not bend or deform the neckband. If you
repeatedly bend the same part of the
neckband, it may become damaged or break. If
the neckband is broken, the internal wire may
come out and injure you. In this case, stop
using the unit.
Other notes
• If you experience discomfort while using the
unit, stop using it immediately.
• If you have any questions or problems
concerning this unit that are not covered in this
manual, please consult your nearest Sony
dealer.
Specifications
Headset
Power source:
DC 3.7 V: Built-in lithium-ion rechargeable
battery
DC 5 V: When charged using USB
Operating temperature:
0 °C to 40 °C
Rated power consumption:
0.5 W
Mass:
Approx. 33 g
Included items:
Wireless Stereo Headset (1)
USB Type-C® cable (USB-A to USB-C®)
(approx. 20cm) (1)
Carrying pouch (1)
Communication specification
Communication system:
Bluetooth Specification version 5.0
Output:
Bluetooth Specification Power Class 1
Frequency band:
2.4 GHz band (2.400 0 GHz - 2.483 5 GHz)
Design and specifications are subject to change
without notice.
System requirements for
battery charge using USB
USB AC adaptor
A commercially available USB AC adaptor
capable of supplying an output current of 0.5 A
or more.
Trademarks
• iPhone is a trademark of Apple Inc., registered
in the U.S. and other countries.
• Android is a trademark of Google LLC.
• The Bluetooth® word mark and logos are
registered trademarks owned by Bluetooth SIG,
Inc. and any use of such marks by Sony Group
Corporation and its subsidiaries is under
license.
• USB Type-C® and USB-C® are registered
trademarks of USB Implementers Forum.
• All other trademarks and registered trademarks
are trademarks or registered trademarks of
their respective holders. In this manual, ™ and
® marks are not specified.
Licenses
• This product contains software that Sony uses
under a licensing agreement with the owner of
its copyright. We are obligated to announce the
contents of the agreement to customers under
requirement by the owner of copyright for the
software. Please access the following URL and
read the contents of the license.
https://rd1.sony.net/help/mdr/sl/23/
• Services offered by third parties may be
changed, suspended, or terminated without
prior notice. Sony does not bear any
responsibility in these sorts of situations.
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