BOSE QuietComfort SE ANC User guide [pl]

QUIETCOMFORT SE HEADPHONES

IMPORTANT SAFETY INSTRUCTIONS

Please read and keep all safety, security, 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/compliancewww.Bose.com/compliance

This product conforms to all applicable Electromagnetic Compatibility Regulations 2016 and all other
applicable UK regulations. The complete declaration of conformity can be found at:

www.Bose.com/compliancewww.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/compliancewww.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 the
apparatus, 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 your
product 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 in
some 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 they
interfere 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
or others, 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 happens, turn the headphones off
and contact Bose customer service.

• Remove product immediately if you notice heat coming from the product..

• Do NOT use mobile phone adapters to connect headphones to airplane seat jacks, as this could result in
injury or property damage due to overheating.

• Do NOT use the headphones as aviation communication headsets.

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 your
implantable medical device.

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IMPORTANT SAFETY INSTRUCTIONS

• 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, fire or
the like).

• Do NOT wear while charging.

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REGULATORY AND LEGAL INFORMATION

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 harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular 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 the
interference 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 to
operate 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.

Maximum transmit power is below regulatory limits such that SAR testing is not necessary and exempt per
applicable regulations.

This symbol means the product must not be discarded as household waste, and should be delivered to
an 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 this
product, 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 and
interfere legal communications; If found, the user shall cease operating immediately until no interference is
achieved. The said legal communications means radio communications is operated in compliance with the
Telecommunications Management Act. The low power radio-frequency devices must be susceptible with the
interference 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.

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REGULATORY AND LEGAL INFORMATION

Removal of the rechargeable lithium-ion battery in this product should be conducted only by a qualified
professional. Please contact your local Bose retailer or see products.bose.com/static/compliance/index.htmlproducts.bose.com/static/compliance/index.html
for further information.

Please dispose of used batteries properly, following local regulations. Do not incinerate.

Names and Contents of Toxic or Hazardous Substances or Elements

Toxic or Hazardous Substances and Elements

Lead

Part Name

PCBs X O O O O O

Metal Parts X O O O O O

Plastic Parts O O O O O O

Speaker X O O O O O

Cables X O O O O O

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 homogeneous materials for

this 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 homogeneous

materials used for this part is above the limit requirement of GB/T 26572.

(Pb)

Mercury

(Hg)

Cadmium

(Cd)

Hexavalent

(CR(VI))

Polybrominated

Biphenyl

(PBB)

Date of Manufacture: The eighth digit in the serial number indicates the year of manufacture; “2” is 2012

or 2022.

Importers: Bose Electronics (Shanghai) Company Limited, Level 6, Tower D, No. 2337 Gudai Rd. Minhang
District, Shanghai 201100 | Bose Products B.V., Vijzelstraat 68, 1017HL Amsterdam, The Netherlands | Ingram
Micro Mexico SA de CV, Joselillo 3 Int. Piso 5 Col. El Parque, Naucalpan de Juarez, Edo Mex 53398
Phone Number: [phone] | Bose Limited (H.K.), 7F., No. 2, Sec. 3, Minsheng E. Road, Zhongshan Dist.,
Taipei City 104511, Phone Number: [phone] | Bose Limited, 16 Dufour’s Place, London W1F 7SP

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)

Model 437310. The CMIIT ID is located inside the earcup under the scrim.

Polybrominated

diphenylether

(PBDE)

Please complete and retain for your records

The serial and model numbers are located inside the earcup under the scrim.

Serial number: _____________________________________

Model number: _____________________________________

Please keep your receipt with your owner’s guide. Now is a good time to register your Bose product. You can
easily do this by going to worldwide.Bose.com/ProductRegistrationworldwide.Bose.com/ProductRegistration

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REGULATORY AND LEGAL INFORMATION

REGULATORY INFORMATION

Security Information

This product is capable of receiving security updates from Bose automatically when connected to

the Bose app. In order to receive security updates via the mobile application, you must complete
the product setup process in the Bose app. If you do not complete the setup process, you will be
responsible for installing security updates that Bose makes available via btu.Bose.combtu.Bose.com

Apple, the Apple logo, iPad, iPhone, and iPod are trademarks of Apple Inc., registered 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 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.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of
such marks by Bose Corporation is under license.

Google Play is a trademark of Google LLC.

Spotify is a registered trademark of Spotify AB

USB Type-C® and USB-C® are registered trademarks of USB Implementers Forum.

Bose, Bose Home Speaker, the B logo, Bose Smart Soundbar, Bose Smart Speaker, Bose Soundbar,
QuietComfort, and SimpleSync are trademarks of Bose Corporation.

Bose Corporation Headquarters: 1-877-230-5639

©2024 Bose Corporation. No part of this work may be reproduced, modified, distributed, or otherwise used
without prior written permission.

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LICENSE DISCLOSURES

The following license disclosures apply to certain third-party software packages used as components in
the product.

Package: FreeRTOS

Copyright © Amazon Web Services, Inc. or its affiliates. All rights reserved.

The FreeRTOS package is subject to the license terms reprinted below:

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
documentation files (the “Software”), to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of
the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

Package: Nanopb

Copyright © 2011 Petteri Aimonen <jpa at nanopb.mail.kapsi.fi>.

The Nanopb package is subject to the license terms reprinted below:

Zlib License

© 2011 Petteri Aimonen <jpa at nanopb.mail.kapsi.fi>

This software is provided ‘as-is’, without any express or implied warranty. In no event will the authors be held
liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and
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1. The origin of this software must not be misrepresented; you must not claim that you wrote the original

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3. This notice may not be removed or altered from any source distribution.

Package: Mbed TLS 2.16.1

© ARM Limited. All rights reserved.

The Mbed TLS package is subject to the license terms reprinted below:

Apache License

Version 2.0, January 2004

http://www.apache.org/licenses/http://www.apache.org/licenses/

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“License” shall mean the terms and conditions for use, reproduction, and distribution as defined by
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LICENSE DISCLOSURES

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LICENSE DISCLOSURES

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©2024 Bose Corporation

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CONTENTS

WHAT’S IN THE BOX

Contents ...................................................................................................................................................... 13

BOSE APP

Download the Bose app ........................................................................................................................ 14

Add the headphones to an existing account ............................................................................... 14

HEADPHONE CONTROLS

Power on ...................................................................................................................................................... 16

Standby timer ................................................................................................................................... 16

Power off ...................................................................................................................................................... 17

Headphone functions ............................................................................................................................ 18

Media playback and volume ...................................................................................................... 18

Phone calls ........................................................................................................................................ 19

Action button ................................................................................................................................... 20

SHORTCUTS

Use your shortcut ..................................................................................................................................... 21

Change or disable your shortcut ....................................................................................................... 21

SPOTIFY TAP ........................................................................................................................................... 22

NOISE CANCELLATION

Noise cancelling modes ........................................................................................................................ 23

Change the noise cancelling mode .................................................................................................. 23

VOICE CONTROL

Access voice control ............................................................................................................................... 24

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CONTENTS

BLUETOOTH® CONNECTIONS

Connect using the Bluetooth menu on your mobile device .................................................. 25

Disconnect a mobile device ................................................................................................................ 27

Reconnect a mobile device ................................................................................................................. 27

Connect another mobile device ........................................................................................................ 27

Identify connected mobile devices .................................................................................................. 27

Switch between two connected mobile devices ....................................................................... 28

Reconnect a previously connected device ................................................................................... 28

Clear the headphone device list ........................................................................................................ 28

WIRED CONNECTIONS

Connect the audio cable ...................................................................................................................... 29

BATTERY

Charge the headphones ........................................................................................................................ 30

Charging time ................................................................................................................................... 30

Hear the battery level ................................................................................................................... 30

HEADPHONE STATUS

Bluetooth status ...................................................................................................................................... 31

Battery status ........................................................................................................................................... 31

Charging status ........................................................................................................................................ 32

Update and error status ....................................................................................................................... 32

CONNECT BOSE PRODUCTS

Connect a Bose Smart Speaker or Soundbar .............................................................................. 33

Benefits .............................................................................................................................................. 33

Compatible products .................................................................................................................... 33

Connect using the Bose app ..................................................................................................... 33

Reconnect to a Bose Smart Speaker or Soundbar .................................................................... 34

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CONTENTS

CARE AND MAINTENANCE

Store the headphones ........................................................................................................................... 35

Clean the headphones........................................................................................................................... 36

Replacement parts and accessories ............................................................................................... 36

Limited warranty ....................................................................................................................................... 36

Serial number location ........................................................................................................................... 37

TROUBLESHOOTING

Try these solutions first .......................................................................................................................... 38

Other solutions.......................................................................................................................................... 38

Restore the headphones to factory settings ................................................................................ 41

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WHAT’S IN THE BOX

CONTENTS

Confirm that the following parts are included:

Bose QuietComfort 45 headphones

USB Type-C® cable 3.5 mm to 2.5 mm audio cable

Soft carry case

NOTE: If any part of your product is damaged, do not use it. Contact your authorized

Bose dealer or Bose customer service.

Visit: support.Bose.com/QCSEsupport.Bose.com/QCSE

13 | ENG

BOSE APP

The 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 access new features through updates.

NOTE: If you’ve already created a Bose account for another Bose product, add the

headphones to your existing account (see the bottom of page 14).

DOWNLOAD THE BOSE APP

1. On your mobile device, download the Bose app.

BOSE

2. Follow the app instructions.

ADD THE HEADPHONES TO AN EXISTING ACCOUNT

To add your Bose QuietComfort 45 headphones, open the Bose app and add
your headphones.

14 | ENG

HEADPHONE CONTROLS

Action button Multi-function button

2.5 mm audio cable port

Power/Bluetooth
switch

Volume up

Volume down

USB-C® port

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HEADPHONE CONTROLS

POWER ON

On the right earcup, slide the Power/Bluetooth switch to the right.

A voice prompt announces the battery level, and the status light glows according to
the current charge level (see page 31).

Standby timer

The standby timer conserves the battery when the headphones are not being used.

To set up and customize the standby timer, use the Bose app.

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HEADPHONE CONTROLS

POWER OFF

Slide the Power/Bluetooth switch to the left.

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

17 | ENG

HEADPHONE CONTROLS

HEADPHONE FUNCTIONS

The headphone controls are located on the back of the right earcup.

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.

18 | ENG

HEADPHONE CONTROLS

Phone calls

The Multi-function button is located on the back of the right earcup. The microphone
is located near the front of the right earcup.

The Action button is located on the back of the left earcup.

Action button

Multi-function button

Microphone

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
call and put the current call
on hold

Decline a second incoming
call and stay on current call

Switch between two calls

Create a conference call

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

19 | ENG

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

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

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

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

HEADPHONE CONTROLS

Action button

The Action button allows you to quickly and easily switch between noise
cancelling modes.

The Action button is located on the back of the left earcup.

Action button

To switch between Quiet Mode and Aware Mode, press the Action button.

For information about noise cancelling modes, see page 23.

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SHORTCUTS

A shortcut enables you to quickly and easily access one of the following functions:

• Access Spotify (see page 22)

• 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 from
the main screen.

21 | ENG

SPOTIFY TAP

Spotify Tap is music to your ears, quite literally. Get the tunes playing with a
simple gesture.

NOTE: To use Spotify Tap, it must be set as your shortcut in the Bose app and the

Spotify app must be up to date.

1. Press and hold the Action button to play a recommendation based on your
listening taste.

2. Press and hold the Action button again for the next recommendation made just
for you.

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NOISE CANCELLATION

Noise cancelling reduces unwanted noise, providing a clearer and 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.

Quiet Mode allows you to block out distractions using the highest level of
noise cancellation.

Aware Mode provides full transparency and allows you to hear your surroundings
while enjoying your audio.

Choose your noise cancelling mode based on your listening preferences
and environment.

NOISE CANCELLING MODES

MODE DESCRIPTION

Quiet World-class noise cancellation with Bose-optimized audio.

Aware Hear your surroundings while enjoying your audio.

Custom noise control (noise cancellation or wind block)
based on your listening preferences and environment.

Custom

NOTE: You can create up to two custom modes using the

Bose app. To access this option, tap Modes on the
main screen.

NOTE: When powered on, the headphones default to the last mode you used.

CHANGE THE NOISE CANCELLING MODE

To change the noise cancelling mode, press the Action button.

A voice prompt announces the selected noise cancelling mode.

TIP: You can also change the noise cancelling mode using the Bose app.

23 | ENG

VOICE CONTROL

ACCESS VOICE CONTROL

You can use the headphones to access voice control on your mobile device. To access
voice control, press and hold the Multi-function button for 1 second.

The Multi-function button is located on the back of the right earcup.

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

24 | ENG

BLUETOOTH CONNECTIONS

CONNECT USING THE BLUETOOTH MENU ON YOUR
MOBILE DEVICE

You can store up to eight devices in the headphone device list, and the headphones
can be actively connected to two devices at a time. 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 14).

1. Slide the Power/Bluetooth switch to the right l and hold for 3 seconds.

You hear “Ready to connect,” and the status light blinks blue.

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WHAT’S IN THE BOX

BLUETOOTH CONNECTIONS

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.

TIP: Look for the name you entered for your headphones in the Bose app.

If you didn’t name your headphones, the default name appears.

QuietComfort 45

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

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WHAT’S IN THE BOX

BLUETOOTH CONNECTIONS

DISCONNECT A MOBILE DEVICE

Use the Bose app to disconnect your mobile device.

TIP: You can also use Bluetooth settings to disconnect your device. Disabling the

Bluetooth feature disconnects all other devices.

RECONNECT A MOBILE DEVICE

When powered on, the headphones try to reconnect with the two most recently­connected devices.

NOTES:

• The device 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 14) or use the
Bluetooth menu on your mobile device (see page 25).

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 device is
currently connected.

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WHAT’S IN THE BOX

BLUETOOTH CONNECTIONS

SWITCH BETWEEN TWO CONNECTED MOBILE DEVICES

1. Pause audio on your first mobile device.

2. Play audio on your second mobile device.

The headphones switch to that mobile device’s audio stream.

NOTE: Your headphones receive phone calls from both devices, regardless of

which device is playing audio.

RECONNECT A PREVIOUSLY CONNECTED DEVICE

1. Slide the Power/Bluetooth switch to the right l and release to hear which device
is connected.

2. Within 2 seconds, slide the Power/Bluetooth switch to the right l and release
again to connect to 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

newly-connected 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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WIRED CONNECTIONS

CONNECT THE AUDIO CABLE

Use the 2.5 mm to 3.5 mm cable to connect a non-wireless device or to continue
using the headphones if the battery is depleted.

1. Connect the cable into the 2.5 mm port on the left earcup.

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

NOTE: You can use the headphones powered on or off when the audio cable

is connected.

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BATTERY

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 wall charger.

NOTES:

• When the headphones begin charging, the status light blinks white for 10 seconds.

When fully charged, the status light glows solid white.

• The headphones don’t play while charging.

Charging time

Allow up to 2.5 hours to fully charge the headphones.

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, please charge now.”

NOTE: To visually check the battery, see the status light l ocated on the right earcup.

For more information, see “Battery status” on page 31.

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HEADPHONE STATUS

The status light is located on the right earcup.

BLUETOOTH STATUS

Shows the Bluetooth connection status.

Headphone
status light

LIGHT ACTIVITY SYSTEM STATE

Blinking blue Ready to connect

Solid blue (10 seconds) Connected

BATTERY STATUS

Shows the battery level.

LIGHT ACTIVITY SYSTEM STATE

Solid white Medium to full charge

Solid amber Low charge

TIP: You can also check the battery level using the Bose app.

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WHAT’S IN THE BOX

HEADPHONE STATUS

CHARGING STATUS

Shows the charging status.

LIGHT ACTIVITY SYSTEM 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 ACTIVITY SYSTEM STATE

Fast 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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CONNECT BOSE PRODUCTS

CONNECT 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 your Bose

Smart Soundbar while keeping the headphones as loud as you like.

• Hear your music clearly from the next room by connecting the headphones to your

Bose Smart Speaker.

NOTE: SimpleSync™ technology has a Bluetooth range of up to 30 ft (9 m). Walls and

construction 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 700/Bose Soundbar 700

• Bose Soundbar 500

• 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: worldwide.Bose.com/Support/Groupsworldwide.Bose.com/Support/Groups

Connect using the Bose app

1. On the headphones, slide the Power/Bluetooth switch to the right l and hold for
3 seconds.

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 product. For
more information, visit: worldwide.Bose.com/Support/Groupsworldwide.Bose.com/Support/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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CONNECT BOSE PRODUCTS

RECONNECT TO A BOSE SMART SPEAKER OR SOUNDBAR

Use the Bose app to reconnect the headphones to a previously-connected
compatible Bose product. For more information, visit: support.Bose.com/Groupssupport.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 40.

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CARE AND MAINTENANCE

STORE THE HEADPHONES

The 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.

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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CARE AND MAINTENANCE

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/QCSEsupport.Bose.com/QCSE

LIMITED WARRANTY

Your headphones are covered by a limited warranty. Visit our website at

worldwide.Bose.com/Warrantyworldwide.Bose.com/Warranty for details of the limited warranty.

To register your product, visit worldwide.Bose.com/ProductRegistrationworldwide.Bose.com/ProductRegistration for
instructions. Failure to register will not affect your limited warranty rights.

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CARE AND MAINTENANCE

SERIAL NUMBER LOCATION

The serial number is located inside the right earcup under the scrim. The scrim is the
inner 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

S/N: 011001000100010AE

Scrim

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TROUBLESHOOTING

TRY THESE SOLUTIONS FIRST

If you experience problems with your headphones:

• Check the state of the status light (see page 31).

• Charge the battery (see page 30).

• Increase the volume on your headphones, mobile device, and music app.

• Download the Bose app and run available software updates (see page 14).

• Try connecting another mobile device (see page 27).

If you could not resolve your issue, see the table below to identify symptoms and
solutions to common problems. If you are unable to resolve your issue, contact
Bose customer service.

Visit: worldwide.Bose.com/contactworldwide.Bose.com/contact

OTHER SOLUTIONS

SYMPTOM SOLUTION

Headphones don’t
power on

Headphones don’t
connect with your
mobile device

Battery won’t charge

Charge the battery.

Disconnect the back-up audio cable.

Disconnect the USB charging cable.

On your mobile device:

Disable the Bluetooth feature and then re-enable.

Delete your Bose QuietComfort 45 headphones from the
Bluetooth list on your device, including any duplicate listings
labeled LE (Low Energy). Connect again.

Move your mobile device closer to the headphones and away
from any interference or obstructions.

Visit support.Bose.com/QCSEsupport.Bose.com/QCSE to see how-to videos.

Clear the connected devices list (see page 28) and
connect again.

Secure the ends of the USB charging cable.

Try another charging source.

If your headphones have been exposed to high or low
temperatures, let the headphones return to room temperature
and try charging again.

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TROUBLESHOOTING

SYMPTOM SOLUTION

Power on the headphones and charge the battery.

Check the state of the status light (see page 31).

Slide the Power/Bluetooth switch to the right and release to hear
the connected device. Make sure you are using the
correct device.

Move your mobile device closer to the headphones and away

No sound

from any interference or obstructions.

Use a different music source.

If two mobile devices are connected, pause your other
device first.

If two mobile devices are connected, move the devices within
range of the headphones (30 ft or 9 m).

Try a locally stored music or video file on your mobile device.

If in a windy environment, create a custom mode with wind
blocking enabled in the Bose app. To access this option, tap
Modes on the main screen (see page 23).

Use a different music source.

Poor sound quality

Connect another mobile device (see page 27).

Disconnect the second device.

Move your mobile device closer to the headphones and away
from any interference or obstructions.

Try a locally stored music or video file on your mobile device.

No sound from a device
connected by the back­up audio cable

Increase the volume on your headphones, your mobile device
and music source.

Connect another device (see page 27).

Secure the ends of the back-up audio cable.

Poor sound quality from
a device connected by
audio cable

Action button doesn’t
change the noise
cancelling mode

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Secure the ends of the back-up audio cable.

Connect another device (see page 27).

Make sure your headphones are powered on.

Use the Bose app to change the noise cancelling mode.

TROUBLESHOOTING

SYMPTOM SOLUTION

Headphones don’t
connect to a Bose
Smart Soundbar
or Speaker

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

Delayed audio when
connected to a Bose
Smart Soundbar
or Speaker

Slide and hold the Power/Bluetooth button until you hear “Ready
to connect another device,” and the status light blinks blue.

Make sure that the headphones are within 30 ft (9 m) of your
soundbar or speaker.

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

Download the Bose app and run available software updates.

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TROUBLESHOOTING

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 were
being set up for the first time.

Restoring to factory settings is only recommended if you are having issues with the
headphones, or you have been instructed to do so by Bose customer service.

RESTORE THE HEADPHONES TO FACTORY SETTINGS

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 your

Bose account using the Bose app, visit: support.Bose.com/QCSEsupport.Bose.com/QCSE

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 to
indicate factory settings are being restored (2 to 3 seconds).

4. When the restore is complete, the status light slowly blinks blue. The headphones
are now in their original out-of-box state.

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©2024 Bose Corporation, 100 The Mountain Road, Framingham, MA 01701-9168 USA

AM878541-0010 Rev. 01