Sony WH-CH720N User manual

WH-CH720N Model: YY2966
Wireless Noise Canceling Stereo Headset
https://rd1.sony.net/help/mdr/2966/h_zz/
5-045-498-71(1)
©2023 Sony Corporation
Printed in China
https://www.sony.net/
Reference Guide
Model: YY2966
The term “product” in this document refers to the
unit or its accessories.
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 subject the batteries to extreme low
temperature conditions that may result in
overheating and thermal runaway.
Do not dismantle, open, or shred secondary
batteries.
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.
This unit has been tested and found to comply
with the limits set out in the EMC regulation
using a connection cable shorter than 3 m.
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.
The unit is not waterproof. 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
• When using the unit while you are perspiring
If you touch the unit with wet hands, or put the
unit in the pocket of a damp article of clothing,
the unit may get wet.
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.
This product has magnets. Placing magnetic
stripe cards in the vicinity of the product may
affect the magnetism of the card and render it
unusable.
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.

Communication specification
Communication system:
Bluetooth Specification version 5.2
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
(500 mA) or more.
Compatible iPhone/iPod
models
iPhone SE (3rd generation), iPhone 13 Pro Max,
iPhone 13 Pro, iPhone 13, iPhone 13 mini,
iPhone 12 Pro Max, iPhone 12 Pro, iPhone 12,
iPhone 12 mini, iPhone SE (2nd generation),
iPhone 11 Pro Max, iPhone 11 Pro, iPhone 11,
iPhone XS Max, iPhone XS, iPhone XR, iPhone X,
iPhone 8 Plus, iPhone 8, iPhone 7 Plus, iPhone 7,
iPhone SE, iPhone 6s Plus, iPhone 6s,
iPod touch (7th generation)
(As of May 2022)
Trademarks
• Apple, iPhone, iPod and iPod touch are
trademarks of Apple Inc., registered in the U.S.
and other countries.
• 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
• Use of the Made for Apple badge means that
an accessory has been designed to connect
specifically to the Apple product(s) identified in
the badge, and has been certified by the
developer to meet Apple performance
standards. Apple is not responsible for the
operation of this device or its compliance with
safety and regulatory standards.
• 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.
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 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.
Notes on wearing the unit
• Because the headphones achieve a tight seal
over the ears, forcibly pressing them against
your ears or quickly pulling them off can result
in eardrum damage. When wearing the
headphones, the speaker diaphragm may
produce a click sound. This is not a
malfunction.
Other notes
• When you use the unit as wired headphones,
use the supplied headphone cable only. Make
sure that the headphone cable is firmly
inserted.
• Do not apply weight or pressure to the unit for
long periods, including when it is stored, as it
may cause deformation.
• 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.
Location of the serial number label
Specifications
Headset
Power source:
DC 3.85 V: Built-in lithium-ion rechargeable
battery
DC 5 V: When charged using USB
Operating temperature:
0 °C to 40 °C
Rated power consumption:
3 W
Mass:
Approx. 192 g
Impedance:
325  (1 kHz) (when connecting via the
headphone cable with the unit turned on)
31  (1 kHz) (when connecting via the
headphone cable with the unit turned off)
Sensitivity:
108 dB/mW (when connecting via the
headphone cable with the unit turned on)
99 dB/mW (when connecting via the
headphone cable with the unit turned off)
Frequency response:
7 Hz - 20 000 Hz (JEITA) (when connecting
via the headphone cable with the unit
turned on)
Included items:
Wireless Noise Canceling Stereo Headset (1)
USB Type-Ccable (USB-A to USB-C)
(approx. 20 cm) (1)
Headphone cable (approx. 1.2 m) (1)