Sony WH-CH520 Wireless Stereo Headset

Safety Precautions

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.

The nameplate and important information concerning safety are attached in the following locations: [See Figure 1]

• 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.

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.
• The audio playback on this unit may be delayed from that on the transmitting device, due to the characteristics of Bluetooth wireless technology. As a result, the sound may not be in sync with the image when viewing movies or playing games.

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

• 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: [See Figure 2]

Specifications

Headset

Communication specification

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.

Diagram Descriptions

Diagram A: Front and side view of the wireless stereo headset.

Diagram B: Close-up of the earcup and headband connection.

Diagram C: Interior view of the earcup showing the speaker diaphragm.