Cue themusic.

QUIETCOMFORT HEADPHONESI MP O RTA NT SA F ETY INSTRU CTIO N S

Please read and keep all safety and use instructions.
Bose Corporation hereby declares that this product is in compliance with the essential requirements
and other relevant provisions of Directive 2014/53/EU and all other applicable EU directive
requirements. The complete declaration of conformity can be found at: www.Bose.com/complianceThis product conforms to all applicable Electromagnetic Compatibility Regulations 2016 and all otherapplicable UK regulations. The complete declaration of conformity can be found at:www.Bose.com/compliance
Bose Corporation hereby declares that this product is in compliance with the essential requirements
per Radio Equipment Regulations 2017 and all other applicable UK regulations. The complete
declaration of conformity can be found at: www.Bose.com/compliance

Important Safety Instructions
Do not use this apparatus near water.
Clean only with a dry cloth.
Refer all servicing to qualified personnel. Servicing is required when the apparatus has been damaged in any
way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the­apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has
been dropped.

WARNINGS/CAUTIONS• To avoid hearing damage, do not use your headphones at a high volume. Turn the volume down on yourproduct before placing the headphones in/on your ears, then turn the volume up gradually until you reach a
comfortable, moderate listening level.
• Use of these headphones while operating a vehicle is not recommended and may be prohibited by law insome locations. Use caution and follow applicable laws regarding headphone use while operating a vehicle.
Stop using your headphones immediately if they interfere with your ability to remain attentive or if theyinterfere with your ability to hear surrounding sounds, including alarms and warning signals, while operating
a vehicle.
• Use caution if using these headphones while performing any activity that requires your attention. Do not use
the headphones when the inability to clearly hear surrounding sounds may present a danger to yourself orothers, for example while riding a bicycle or walking in or near traffic, a construction site, railroad, etc.
• Do NOT use the headphones if they emit any loud unusual noise. If this h­ appens, turn the headphones off
and contact Bose customer service.
• Remove product immediately if you notice heat coming from the product.
Contains small parts which may be a choking hazard. Not suitable for children under age 3.
This product contains magnetic material. Consult your physician on whether this might affect yourimplantable medical device.

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I MP REG
O RTA
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L ATO
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F ETY
INFO
INSTRURMATCTIO
IO N N S• To reduce the risk of fire or electrical shock, do NOT expose this product to rain, dripping, splashing, or
moisture and do not place liquid filled objects such as vases, on or near the product.
• Keep the product away from fire and heat sources. Do NOT place naked flame sources, such as lighted
candles, on or near the product.
• Use this product only with an agency approved LPS power supply which meets local regulatory requirements(e.g., UL, CSA, VDE, CCC).
• Do NOT make unauthorized alterations to this product.
• If the battery leaks, do not allow the liquid to come in contact with the skin or eyes. If contact is made, seek
medical advice.
• Do not expose products containing batteries to excessive heat (e.g. from storage in direct sunlight, fireor the like).
• Do NOT wear while charging.

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REG U L ATO RY A ND L EGA L INFO RM AT I O N

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmfulinterference to radio communications. However, there is no guarantee that interference will not occur in aparticular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct theinterference by one or more of the following measures:• Reorient or relocate the receiving product or antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by Bose Corporation could void the user’s authority tooperate this equipment.
This device complies with part 15 of the FCC Rules and with ISED Canada l­icense-exempt RSS standard(s).
­Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and(2) this device must accept any interference received, including interference that may cause
undesired operation.
This device complies with FCC and ISED Canada radiation exposure limits set forth for general population.
This ­transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Meets IMDA Requirements.
FCC ID: A94437310 | IC: 3232A-437310
CAN ICES-3(B)/NMB-3(B)For Europe: Frequency band of operation 2400 to 2483.5 MHz. | Maximum transmit power less than
20 dBm EIRP.
This symbol means the product must not be discarded as household waste, and should be delivered toan appropriate collection facility for recycling. Proper disposal and recycling helps protect natural
resources, human health and the environment. For more information on disposal and recycling of thisproduct, contact your local municipality, disposal service, or the shop where you bought this product.

Low-power Radio-frequency Devices Technical Regulations
Without permission granted by the NCC, any company, enterprise, or user is not allowed to change frequency,
enhance transmitting power or alter original characteristic as well as performance to a approved low power
radio-frequency devices. The low power radio-frequency devices shall not influence aircraft security andinterfere legal communications; If found, the user shall cease operating immediately until no interference isachieved. The said legal communications means radio communications is operated in compliance with theTelecommunications Management Act. The low power radio-frequency devices must be susceptible with theinterference from legal communications or ISM radio wave radiated devices.
DON’T attempt to remove the rechargeable lithium-ion battery from this product. Contact your local Bose
retailer or other qualified professional for removal.
Removal of the rechargeable lithium-ion battery in this product should be conducted only by a qualified­professional. Please contact your local Bose retailer or see products.bose.com/static/compliance/index.html
for further information.
Please dispose of used batteries properly, following local regulations. Do not incinerate.

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REG U LREGATOURYL ATO
A ND
RYL INFOEGA LRMATINFOIORM
NAT I O N

Names and Contents of Toxic or Hazardous Substances or Elements
Toxic or Hazardous Substances and Elements
Lead
(Pb)

Mercury(Hg)

Cadmium(Cd)

Hexavalent(CR(VI))

PolybrominatedBiphenyl(PBB)

Polybrominateddiphenylether(PBDE)

PCBs

X

O

O

O

O

O

Metal Parts

X

O

O

O

O

O

Plastic Parts

O

O

O

O

O

O

Speakers

X

O

O

O

O

O

Cables

X

O

O

O

O

O

Part Name

This table is prepared in accordance with the provisions of SJ/T 11364.
O: Indicates that this toxic or hazardous substance contained in all of the h­ omogeneous materials forthis part is below the limit requirement of GB/T 26572.
X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneousmaterials used for this part is above the limit requirement of GB/T 26572.

Equipment name: Bose QuietComfort Headphones Type designation: 442395
Restricted substances and its chemical symbols
Unit

Lead
(Pb)

Mercury(Hg)

Cadmium (Cd)Hexavalent­chromium(Cr+6)

Polybrominatedbiphenyls (PBB)

Polybrominated­diphenyl ethers(PBDE)

PCBs

-

b

b

b

b

b

Metal Parts

-

b

b

b

b

b

Plastic Parts

b

b

b

b

b

b

Speakers

-

b

b

b

b

b

Cables

-

b

b

b

b

b

Note 1: “b” indicates that the percentage content of the restricted substance does not exceed the percentage of reference
value of presence.
Note 2: The “−” indicates that the restricted substance corresponds to the exemption.

Date of Manufacture: The eighth digit in the serial number indicates the year of manufacture; “3” is 2013or 2023.
Importers: Bose Electronics (Shanghai) Company Limited, Level 6, Tower D, No. 2337 Gudai Rd. Minhang
District, Shanghai 201100 | Bose Products B.V., Gorslaan 60, 1441 RG Purmerend, The Netherlands | Bose deMéxico S. de R.L. de C.V., Avenida Prado Sur #150, Piso 2, Interior 222 y 223, Colonia Lomas de Chapultepec V
Sección, Miguel Hidalgo, Ciudad de México, C.P. 11000 Phone Number: +5255 (5202) 3545 | Bose Limited (H.K.),
9F., No.10, Sec. 3, Minsheng E. Road, Zhongshan Dist. Taipei City 10480, Phone Number: +886-2-2514 7676 |Bose Limited, Bose House, Quayside Chatham Maritime, Chatham, Kent, ME4 4QZ, United Kingdom
Input Rating: 5V p 0.5A | Charging Temperature Range: 32° F to 113° F (0° C to 45° C) |Discharging Temperature Range: -4° F to 140° F (-20° C to 60° C)
The CMIIT ID is located inside the earcup under the scrim.
License Disclosures: To view the license disclosures that apply to the third-party software packages included
as components of the Bose QuietComfort Headphones, use the Bose app. You can access this informationfrom the Settings menu.

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REG U L ATO RY A ND L EGA L INFO RM AT I O NApple, the Apple logo, iPad, and iPhone are trademarks of Apple Inc., r­ egistered in the U.S. and other countries.
App Store is a service mark of Apple Inc. The ­trademark “iPhone” is used in Japan with a license from
Aiphone K.K.
Use of the Made for Apple badge means that an accessory has been designed to connect specifically to theApple p­ roduct(s) identified in the badge, and has been certified by the developer to meet Apple performancestandards. Apple is not ­responsible for the operation of this device or its compliance with safety andregulatory standards.
The Bluetooth® word mark and logos are registered trademarks owned by ­Bluetooth SIG, Inc. and any use ofsuch marks by Bose Corporation is under license.
Google Play is a trademark of Google LLC.
This product incorporates Spotify software which is subject to third-party licenses found here:
www.spotify.com/connect/third-party-licenses
Spotify is a registered trademark of Spotify AB.
USB Type-C® and USB-C® are registered trademarks of USB Implementers Forum.
Bose, the B logo, and QuietComfort are trademarks of Bose Corporation. | Bose Corporation Headquarters:
1-877-230-5639 | ©2024 Bose Corporation. No part of this work may be reproduced, modified, d­ istributed, or­otherwise used without prior written permission.

Please complete and retain for your records
The serial and model numbers are located inside the earcup under the scrim.
Serial number: ____________________________________________________________________________
Model number: 437310
Please keep your receipt. Now is a good time to register your Bose product. You can easily do this by going toworldwide.Bose.com/ProductRegistration

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C O NTE NTS

WHAT’S IN THE BOX
Contents.............................................................................................................................................................................. 10

BOSE APP
Download the Bose app................................................................................................................................................ 11

HEADPHONE CONTROLSPower on.............................................................................................................................................................................. 13
Power off.............................................................................................................................................................................. 14
Auto-off..................................................................................................................................................................... 14
Media playback and volume........................................................................................................................................ 15
Phone calls.......................................................................................................................................................................... 16
Noise cancellation........................................................................................................................................................... 17
Mobile device voice control......................................................................................................................................... 18

SHORTCUTS
Use your shortcut............................................................................................................................................................. 19
Change or disable your shortcut............................................................................................................................... 19

NOISE CANCELLATION
Noise cancelling modes................................................................................................................................................ 20
Change the noise cancelling mode.......................................................................................................................... 21
Noise cancellation while on a call............................................................................................................................. 21
Use noise cancellation only......................................................................................................................................... 22

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C O NTE NTSBLUETOOTH® CONNECTIONSConnect using the Bose app....................................................................................................................................... 23
Connect using the Bluetooth menu on your mobile device.......................................................................... 23
Disconnect a mobile device........................................................................................................................................ 25
Reconnect a mobile device......................................................................................................................................... 25
Connect another mobile device................................................................................................................................ 25
Identify connected mobile devices.......................................................................................................................... 25
Switch between two connected mobile ­devices............................................................................................... 26
Reconnect a previously connected device........................................................................................................... 26
Clear the headphone device list................................................................................................................................ 26

BATTERY
Charge the headphones................................................................................................................................................ 27
Charging time......................................................................................................................................................... 27
Hear the battery level.......................................................................................................................................... 27

HEADPHONE STATUS
Bluetooth status .............................................................................................................................................................. 28
Battery status ................................................................................................................................................................... 28
Charging status ................................................................................................................................................................ 29
Update and error status ............................................................................................................................................... 29

WIRED CONNECTION
Connect the audio cable and microphone........................................................................................................... 30

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C O NTE NTSCONNECT BOSE PRODUCTS
Connect a Bose Smart Speaker or Soundbar...................................................................................................... 31
Benefits..................................................................................................................................................................... 31
Compatible products........................................................................................................................................... 31
Connect using the Bose app............................................................................................................................ 32
Connect using the product controls............................................................................................................. 33
Reconnect to a Bose Smart Speaker or Soundbar............................................................................................ 34

CARE AND MAINTENANCE
Store the headphones................................................................................................................................................... 35
Clean the headphones.................................................................................................................................................. 37
Replacement parts and accessories....................................................................................................................... 37
Limited warranty............................................................................................................................................................... 37
Serial number location................................................................................................................................................... 37

TROUBLESHOOTING
Try these solutions first.................................................................................................................................................. 38
Other solutions................................................................................................................................................................. 38
Reset the headphones................................................................................................................................................... 43
Restore the headphones to factory settings........................................................................................................ 44

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W H AT’ S IN TH E B OXCONTENTS
Confirm that the following parts are included:

Bose QuietComfort Headphones

Carry case

USB Type-A to USB Type-C® cable

3.5 mm to 2.5 mm audio cablewith microphone

NOTE: If any part of your product appears to be missing or damaged, don’t use it.
Visit support.Bose.com/QC for troubleshooting articles, videos, andproduct repair or replacement.

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BOSE APPThe Bose app lets you set up and control the headphones from any mobile device,
such as a smartphone or tablet.
Using the app, you can manage Bluetooth connections, manage headphone settings,
choose your voice prompt language, and get any future updates and new features
made available by Bose.
NOTE: If you’ve already downloaded the Bose app for another Bose product, you can
add the headphones from the product list screen.

DOWNLOAD THE BOSE APP
1. On your mobile device, download the Bose app.

BOSE

2. Follow the app instructions.

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H EA D P H O NE C O NTRO LS

The headphone controls are located on the back of the earcups.
Action button

Multi-function button

Power/Bluetooth
switchVolume up
Volume down
2.5 mm audio port

USB-C® port

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POWER ON
Slide the Power/Bluetooth switch to the right l.
A voice prompt announces the battery level, and the status light glows according to
the current charge level (see page 28).

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H EA D P H O NE C O NTRO LS

POWER OFF
Slide the Power/Bluetooth switch to the left.

NOTE: When the headphones are powered off, noise cancellation is disabled.

Auto-off
Auto-off conserves the headphone battery when they aren’t in use.
To enable and customize the auto-off feature, use the Bose app. You canaccess this option from the Settings menu.

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H EA
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The Multi-function button and volume buttons control media playback and volume.

Volume up
Multi-function button
Volume down

FUNCTION

WHAT TO DO

Play/Pause

Press the Multi-function button.

Skip forward

Double-press the Multi-function button.

Skip backward

Triple-press the Multi-function button.

Volume up

Press H.

Volume down

Press z.

NOTES:• To quickly increase the volume, press and hold H.
• To quickly decrease the volume, press and hold z.

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H EA D P H O NE C O NTRO LS

PHONE CALLSThe Multi-function button controls phone calls. The Action button enables you tomute the audio while on a call.

Multi-function
buttonActionbuttonMicrophone

FUNCTION

WHAT TO DO

Answer/End a call

Press the Multi-function button.

Decline an incoming call

Press and hold the Multi-function button for 1 second.

Answer a second incoming calland put the c­ urrent call on hold

While on a call and a second incoming call is ringing,press the Multi-function button.

Decline a second incoming calland stay on current call

While on a call and a second incoming call is ringing,press and hold the Multi-function button for 1 ­second.

Switch between two calls

While two calls are active, double-press theMulti-function button.

Create a conference call

While two calls are active, press and hold theMulti-function button for 3 ­seconds.

Mute/Unmute a call

While on a call, double-press the Action button.

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H EA
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cancelling modes.
For information about noise cancelling modes, see page 20.

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H EA D P H O NE C O NTRO LS

MOBILE DEVICE VOICE CONTROLYou can use the headphones to access voice control on your mobile device.
Press and hold the Multi-function button.

NOTE: You can’t access voice control while on a call.

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S H O RTC U TS

A shortcut enables you to quickly and easily access one of the following functions:• Access Spotify• Access battery level
NOTE: By default, accessing battery level is enabled.

USE YOUR SHORTCUT
Press and hold the Action button.

CHANGE OR DISABLE YOUR SHORTCUT
To change or disable your shortcut, use the Bose app. You can access this option fromthe main screen.

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NO IS E CA NC E L L AT IO N

Noise cancelling reduces unwanted noise, providing a clearer, more lifelike
audio performance.
You can choose between two pre-configured noise cancelling modes —­­ Quiet or
Aware — or create up to two of your own custom modes.
Choose your noise cancelling mode based on your listening p­ referencesand environment.

NOISE CANCELLING MODESMODE

DESCRIPTION

Quiet

Full noise cancellation with Bose-optimized audio. Allows you to blockout distractions using the highest level of noise cancellation.

Aware

Full transparency with Bose-optimized audio. Allows you to hear yoursurroundings while enjoying your audio.

CustomCustom noise control (noise cancellation or wind block) based on yourlistening preferences and environment.
NOTE: You can create up to two custom modes using the Bose app.
To access this option, tap Modes on the main screen.

NOTE: By default, the headphones power on in Quiet Mode. To set the headphones
to power on with the last mode used, use the Bose app. You can access thisoption from the Settings menu.

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NO
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CHANGE THE NOISE CANCELLING MODE
Press the Action button.

A voice prompt announces the selected mode.
TIP: You can also change the mode using the Bose app. To access this option, tap
Modes on the main screen.

NOISE CANCELLATION WHILE ON A CALL
When you make or receive a call, the headphones remain at the current noise
cancellation setting and self voice is activated. Self voice helps you hear yourself
speak more naturally.
To adjust noise cancellation while on a call, change the mode (see “Change the noise
cancelling mode”).
NOTE: To adjust self voice, use the Bose app. You can access this option from theSettings menu.

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NO IS E CA NC E L L AT IO N

USE NOISE CANCELLATION ONLY
You can use noise cancellation only, without audio or interruptions from phone calls.
1. Do one of the following:• Disconnect your mobile device (see page 25).
• Turn the Bluetooth feature off on your mobile device.
2. Press the Action button to change the mode (see page 21).
NOTE: To reconnect your mobile device, select the headphones from the Bluetoothlist on your device.

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B LU ETO OTH C O NNECT IO NS

You can store up to eight devices in the headphone device list, and the headphones
can ­be actively connected to up to two devices at a time (multi-point connection).
You can play audio from only one device at a time.
NOTE: For the best experience, use the Bose app to set up and connect your mobile
device (see page 11).

CONNECT USING THE BOSE APP
To connect the headphones and manage Bluetooth settings using the Bose app, seepage 11.

CONNECT USING THE BLUETOOTH MENU ON YOUR ­MOBILE DEVICE
1. Slide the Power/Bluetooth switch to the right l and hold for 3 seconds until you
hear “Ready to connect” and the status light blinks blue.

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2. On your device, enable the Bluetooth feature.
NOTE: The Bluetooth feature is usually found in the Settings menu.
3. Select your headphones from the device list.
NOTE: Look for the name you entered for your headphones in the Bose app. If you
didn’t name your headphones, the default name appears.

Bose QC Headphones

Once connected, you hear “Connected to <device name>,” and the status light
glows solid blue for 10 seconds.

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B LU W
ETO
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C OtheNNECT
boxIO NSDISCONNECT A MOBILE DEVICE
To disconnect your mobile device, use the Bose app.
TIP: You can also use Bluetooth settings on your mobile device to disconnect yourdevice. Disabling the Bluetooth feature disconnects all other devices.

RECONNECT A MOBILE DEVICE
When powered on, the headphones try to reconnect with the two most­recently-connected devices.
NOTES:• The devices must be within range (30 ft or 9 m) and powered on.
• Make sure the Bluetooth feature is enabled on your mobile device.
• If the multi-point connection feature is disabled, the headphones try to reconnect
with the most recently-connected device.

CONNECT ANOTHER MOBILE DEVICE
The headphones can ­be actively connected to up to two devices at a time
(multi-point connection).
To connect another device, download the Bose app (see page 11) or use theBluetooth menu on your mobile device (see page 23).
NOTES:• You can only play audio from one device at a time.
• To manage or disable the multi-point connection feature, use the Bose app. You
can access this option from the Settings menu.
• Disabling the multi-point connection feature disconnects the second
connected device.

IDENTIFY CONNECTED MOBILE DEVICES
Slide the Power/Bluetooth switch to the right l and release to hear which devices are
currently ­connected.

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B LU W
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boxIO NSSWITCH BETWEEN TWO CONNECTED MOBILE ­DEVICES
1. Pause audio on your first mobile device.
2. Play audio on your second mobile device.
NOTES:• Your headphones receive phone calls from both devices, regardless of which­device is playing audio.
• You can also switch between two devices using the Bose app. You can accessthis option from the Settings menu.

RECONNECT A PREVIOUSLY CONNECTED DEVICE
1. Slide the Power/Bluetooth switch to the right l and release to hear which devices
are connected.
2. Within 2 seconds, slide the Power/Bluetooth switch to the right l and releaseagain to hear the name of the next ­device in the headphone device list.
3. Repeat until you hear the correct device name.
You hear a tone that indicates when the device is connected.
4. Play audio on the connected mobile device.
NOTE: If two devices are already connected to the headphones, the newlyconnected device replaces the second device that was previously connected.

CLEAR THE HEADPHONE DEVICE LIST
1. Slide the Power/Bluetooth switch to the right l and hold for 15 seconds until you
hear “Bluetooth device list cleared. Ready to connect.”
2. Delete your headphones from the Bluetooth list on your mobile device.
All devices are cleared and the headphones are ready to connect.

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BATTE RY

CHARGE THE HEADPHONES
1. Connect the small end of the USB cable into the USB-C port on the right earcup.
2. Connect the other end into a USB-A power source such as a computer orwall charger.

The headphones begin charging, and the status light blinks white for 10 seconds.
When the headphones are fully charged, the status light glows solid white.
NOTE: The headphones don’t play and aren’t available in the Bose app whilecharging.

Charging time
Allow up to 2.5 hours to fully charge the headphones.
A full charge powers the headphones for up to 24 hours.

Hear the battery level
Each time you power on the headphones, a voice prompt announces the battery level.
When the headphone battery is low, you hear “Battery low.”
NOTE: To visually check the battery, see the status light ­l­ocated on the right earcup.
For more information, see “Battery status” on page 28.
TIP: You can also hear the battery level using a shortcut. The battery level must be set
as a shortcut using the Bose app (see page 19).

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H EA D P H O NE STATU S

The status light is located on the right earcup.

BLUETOOTH STATUS
Shows the Bluetooth connection status.
LIGHT ACTIVITYSYSTEM STATE

Blinking blue

Ready to connect

Solid blue (10 seconds)

Connected

BATTERY STATUS
Shows the battery level.
LIGHT ACTIVITYSYSTEM STATE

Solid white

Medium to full charge

Solid amber

Low charge

TIP: You can also check the battery level using the Bose app or hear the battery level
using a shortcut. The battery level must be set as a shortcut using the Bose app(see page 11).

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CHARGING STATUS
Shows the charging status.
LIGHT ACTIVITYSYSTEM STATE

Blinks white 2 times

Charging begins

Solid amber

Charging

Solid white

Full charge

UPDATE AND ERROR STATUS
Shows the update or error status.
LIGHT ACTIVITYSYSTEM STATEFast blinking white (10 seconds)

Updating software (via USB)

Slow blinking white (30 to 60 seconds)

Updating software (wirelessly)

Blinking amber and white

Error - contact Bose customer service

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W IRE D C O NNECTIO N

CONNECT THE AUDIO CABLE AND MICROPHONE
The 2.5 mm to 3.5 mm audio cable has a built-in microphone. You can use the audio
cable for phone calls or listening to audio on your source device when a Bluetoothconnection isn’t available, the headphone battery is depleted, or the headphones are
powered off.
NOTES:• When the audio cable is connected, Bluetooth connection and the microphone
voice pick-up on the earcups are disabled.
• When the audio cable is connected and the headphone battery is depleted or theheadphones are powered off, the headphone controls are disabled. Phone calls andmedia playback must be controlled on your source device.
• For the best experience, a Bluetooth connection is recommended.
1. Connect the cable to the 2.5 mm port on the left earcup.

2. Connect the other end of the cable to the 3.5 mm port on your source device.

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C O NNECT B O S E P RO D U CTSCONNECT A BOSE SMART SPEAKER OR SOUNDBAR
Using SimpleSync technology, you can connect the headphones to a
Bose Smart ­Soundbar or Bose Smart Speaker for a personal listening experience.

Benefits• Use independent volume controls on each product to lower or mute yourBose Smart Soundbar while keeping the headphones as loud as you like.
• Hear your music clearly from the next room by connecting the headphones to yourBose Smart Speaker.
NOTE: SimpleSync technology has a Bluetooth range of up to 30 ft (9 m). Walls and­construction materials can affect reception.

Compatible products
You can connect the headphones to any Bose Smart Speaker or Bose
Smart Soundbar.
Popular compatible products include:• Bose Smart Soundbar 900• Bose Smart Soundbar 700/Bose Soundbar 700• Bose Smart Soundbar 600• Bose Smart Speaker 500/Bose Home Speaker 500• Bose Home Speaker 300• Bose Portable Smart Speaker/Bose Portable Home Speaker
New products are added periodically. For a complete list and more information,
visit: support.Bose.com/Groups

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C onnect B ose P roducts

Connect using the Bose app
1. Slide the Power/Bluetooth switch to the right l and hold for 3 seconds until you
hear “Ready to connect another device” and the status light blinks blue.

2. Use the Bose app to connect the headphones to a compatible Bose p­ roduct. For
more information, visit: support.Bose.com/Groups
NOTES:• Make sure that the headphones are within 30 ft (9 m) of your soundbar or speaker.
• You can connect the headphones to only one product at a time.

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C onnect B ose P roducts

Connect using the product controls
1. Slide the Power/Bluetooth switch to the right l and hold for 3 seconds until you
hear “Ready to connect another device” and the status light blinks blue.

2. On your soundbar remote or the top of your speaker, press and hold the Bluetooth
button until the light bar or light ring pulses blue.
The headphones connect to your soundbar or speaker, and you hear the sameaudio through both devices.
NOTES:• Make sure that the headphones are within 30 ft (9 m) of your soundbar or speaker.
• You can connect the headphones to only one product at a time.

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C O NNECT B O S E P RO D U CTSRECONNECT TO A BOSE SMART SPEAKER OR SOUNDBAR
Use the Bose app to reconnect the headphones to a previously-connectedcompatible Bose product. For more information, visit: support.Bose.com/Groups
NOTES:• Your soundbar or speaker must be within range (30 ft or 9 m) and powered on.
• If the headphones don’t reconnect, see “Headphones don’t reconnect to a
­previously-connected Bose ­Smart Soundbar or Speaker” on page 42.

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STORE THE HEADPHONESThe earcups rotate for easy, convenient storage. Place the headphones flat into
the case.
1. Rotate both earcups inward so they lay flat.

Left earcup

Right earcup

2. Fold the left earcup up toward the headband.

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3. Place the headphones flat in the case.

NOTES:• Make sure to power off the headphones when not in use.
• Before storing the headphones for more than a few months, make sure the battery
is fully charged.

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CLEAN THE HEADPHONES
Wipe the outside surfaces with a soft, dry cloth.
Don’t allow moisture to get inside the earcups.

REPLACEMENT PARTS AND ACCESSORIES
Replacement parts and accessories can be ordered through Bose customer service.
Visit: support.Bose.com/QC

LIMITED WARRANTYYour headphones are covered by a limited warranty. Visit our website atworldwide.Bose.com/Warranty for details of the limited warranty.
To register your product, visit worldwide.Bose.com/ProductRegistration for
instructions. Failure to ­register will not affect your limited ­warranty rights.

SERIAL NUMBER LOCATIONThe serial number is located inside the right earcup under the scrim. The scrim is theinner screen that covers and protects the ­components inside the earcup.
To view the serial ­number, grab the scrim at the top edge and gently peel it away.
CAUTION: Be careful not to press down on or remove any other ­components inside
the earcup as this could ­damage the headphones.

S/N: 011001000100010AE

0AE

010001100100

S/N: 01

Scrim

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TRY THESE SOLUTIONS FIRST
If you experience problems with your headphones:• Charge the headphones (see page 27).
• Power on the headphones (see page 13).
• Check the headphones status light (see page 28).
• Make sure your mobile device supports Bluetooth connections (see page 23).
• Move your mobile device closer to the headphones (30 ft or 9 m) and away fromany interference or obstructions.
• Increase the volume on your headphones, mobile device, and music app.
• Connect another mobile device (see page 25).
If you couldn’t resolve your issue, see the table below to identify symptoms andsolutions to common problems. You can also access troubleshooting articles, videos,
and other resources at: support.Bose.com/QC
If you are unable to resolve your issue, contact Bose customer service.
Visit: worldwide.Bose.com/contact

OTHER SOLUTIONSSYMPTOM

SOLUTION

Headphones don’t
power onSlide the Power/Bluetooth switch to the right l (see page 13).
Power off the headphones, then power on again.
Disconnect the audio cable.
Disconnect the USB charging cable.
On your mobile device:• Disable the Bluetooth feature and then re-enable.

Headphones don’t
connect withmobile device• Delete your Bose QuietComfort Headphones from the­Bluetooth list on your ­device. Connect again.
Connect using the Bluetooth menu on your mobile device(see page 23).
Clear the headphone device list (see page 26). Delete theheadphones from the Bluetooth list on your mobile device,including any duplicate listings labeled LE (Low Energy).
Connect again (see page 23).
Visit support.Bose.com/QC to see how-to videos.

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SYMPTOM

SOLUTION
Uninstall the Bose app on your mobile device. Reinstall the app(see page 11).

Headphones don’t
respond during
app setup

Make sure you’re using the Bose app for setup(see page 11).
Make sure you have given the Bose app access toBluetooth connections in your mobile device Settings menu.
Make sure the Bluetooth feature is on in your mobile device
Settings menu.
Uninstall the Bose app on your mobile device. Reinstall the app(see page 11).
Make sure you have given the Bose app access toBluetooth connections in your mobile device Settings menu.

Bose app can’t findheadphones

Connect using the Bluetooth menu on your mobile device(see page 23).
Clear the headphone device list (see page 26). Delete theheadphones from the Bluetooth list on your mobile device,including any duplicate listings labeled LE (Low Energy).
Connect again (see page 23).

Bose app doesn’t workon mobile device

Make sure your mobile device is compatible with the Bose app
and meets minimum system requirements. For more
information, refer to the app store on your mobile device.
Uninstall the Bose app on your mobile device. Reinstall the app(see page 11).
Make sure both ends of the USB cable are securely connected
into the ports (see page 27).

Headphones don’t
chargeTry a different USB-A wall charger, USB cable, or AC (mains)
power source.
If your headphones have been exposed to high or low­temperatures, let the headphones return to room temperatureand try charging again.

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SYMPTOM

SOLUTION
Make sure the volume is turned up (see page 15).
Slide the Power/Bluetooth switch to the right l and release tohear the connected device. Make sure you are using thecorrect device.
Press play on your mobile device to make sure audio is playing.

No soundPlay audio from a different application or music service.
Play audio from content stored directly on your device.
If two mobile devices are connected, pause your otherdevice first.
Restart your mobile device.
Reset the headphones (see page 43).
If in a windy environment, create a custom mode with windblocking enabled in the Bose app. To access this option, tap
Modes on the main screen (see page 20).
Make sure you’re using the Bose app for setup(see page 11).

Poor sound quality

Clear the headphone device list (see page 26). Delete theheadphones from the Bluetooth list on your mobile device,including any duplicate listings labeled LE (Low Energy).
Connect again (see page 23).
Play audio from a different application or music service.
Play audio from content stored directly on your device.
If two mobile devices are connected, disconnect thesecond device.
Turn off any audio enhancement features on the device ormusic app.
Visit support.Bose.com/QC to see how-to videos.
Reset the headphones (see page 43).
Make sure both ends of the audio cable are securely connected
into the ports (see page 30).
Press play on your source device to make sure audio is playing.

No sound from a ­device connected by
the audio cable

Play audio from a different application or music service.
Play audio from content stored directly on your source device.
Increase the volume on the headphones, then increase thevolume on your source device.
Restart your source device.

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SYMPTOM

SOLUTION

Poor sound quality froma device connected byaudio cable

Make sure both ends of the audio cable are securely connected
into the ports (see page 30).

Audio cable microphonedoesn’t work

Action button doesn’tchange the noise­cancelling mode

Restart your source device.
Make sure your mobile device is compatible with the audio cable(CTIA standard pin connection). Refer to your source device
owner’s guide.
If the audio cable is connected, disconnect the cable.
Use the Bose app to change the mode. To access thisoption, tap Modes on the main screen.

Headphones don’t
respondReset the headphones (see page 43).

Poor noise cancellation

Check the mode (see page 20).

Difficulty hearing acaller while on aphone call

Increase the volume using your mobile device.

Voice prompt language
isn’t correct

Change the voice prompt language using the Bose app. You canaccess this option from the Settings menu.

Not receiving
call notifications

Make sure you have given the headphones access to yourcontacts in your mobile device Bluetooth menu.

Try a different mode (see page 20).

Make sure you’re connecting using the Bose app(see page 32).
Headphones don’t
connect to a Bose
Smart Soundbar
or Speaker

Make sure you’re connecting to a compatible Bose ­product. For acomplete list visit: support.Bose.com/Groups
Slide the Power/Bluetooth switch to the right l and hold for 3
seconds until you hear “Ready to connect another device” andthe Bluetooth light blinks blue.
Make sure that the headphones are within 30 ft (9 m) of yoursoundbar or speaker.

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SYMPTOM

SOLUTION

Headphones don’t
reconnect to a
­previously-connected
Bose S­ mart Soundbar
or Speaker

On the headphones, slide the Power/Bluetooth switch to theright l and hold for 3 seconds until you hear “Ready to connect”
and the status light blinks blue. Use the Bose app toconnect the headphones to a compatible Bose product. For
more information, visit: support.Bose.com/Groups

Delayed audio when­connected to a Bose
Smart Soundbar
or Speaker

Download the Bose app and run available software updates.

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TRO U B L E S H O OT INGRESET THE HEADPHONES
If the headphones are unresponsive, you can reset them.
Resetting the headphones resets the product controls and reboots the headphones.
It doesn’t clear any device settings.
1. Connect the small end of the USB cable to the USB-C port on the left earcup.

2. Slide the Power/Bluetooth switch to the right l. At the same time, connect theother end of the USB to a USB-A power source such as a computer orwall charger.

When the reset is complete, the status light glows according to the current charge
level (see page 28).
NOTE: If you’re unable to resolve your issue, additional troubleshooting and support
is available at: support.Bose.com/QC

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TRO U B L E S H O OT INGRESTORE THE HEADPHONES TO FACTORY SETTINGS
A restore to factory settings can clear all settings and return the headphones to their
original out-of-box state. After, the headphones can be configured as if they werebeing set up for the first time.
Restoring to factory settings is only recommended if you are having issues with theheadphones, or you have been instructed to do so by Bose customer service.
1. Remove the headphones from the Bluetooth list on your device.
2. Remove the headphones from your Bose account using the Bose app.
NOTE: For more information about how to remove the headphones from yourBose account using the Bose app, visit: support.Bose.com/QC
3. Slide the Power/Bluetooth switch to the right l and hold. At the same time, press
and hold the Action button for 30 seconds.

The status light blinks white. After 30 seconds, the status light blinks amber toindicate factory settings are being restored (2 to 3 seconds).
When the reset is complete, the status light slowly blinks blue. The headphones
are now in their original out-of-box state.
NOTE: If you’re unable to resolve your issue, additional troubleshooting and support
is available at: support.Bose.com/QC

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©2024 Bose Corporation, 100 The Mountain Road, Framingham, MA 01701-9168 USA
AM885443-0010 Rev. 02