QUIETCOMFORT 45

IMPORTANT SAFETY INSTRUCTIONS

ENG

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

• Do NOT use the headphones at a high volume for any extended period.

– To avoid hearing damage, use your headphones at a comfortable, moderate volume level.

– Turn the volume down on your device before placing the headphones in/on your ears, then

turn the volume up gradually until you reach a comfortable listening level.

• Do NOT use your headphones while driving for phone calls or any other purpose.

• Do NOT use the headphones with noise canceling mode at any time the inability to hear

surrounding sounds may present a danger to yourself or others, e.g., while riding a bicycle or

walking in or near traic, a construction site or railroad, etc., and follow applicable laws

regarding headphone use.

– Turn the headphones o, or use the headphones with noise canceling o and adjust your

volume, to ensure you can hear surrounding sounds, including alarms and warning signals.

– Be aware of how sounds that you rely on as reminders or warnings may vary in character

when using the headphones, even with Aware mode.

• Do NOT use the headphones if they emit any loud unusual noise. If this happens, turn the

headphones o 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.

ENG

IMPORTANT SAFETY INSTRUCTIONS

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

aect your implantable medical device.

• To reduce the risk of fire or electrical shock, do NOT expose this product to rain, liquids

or moisture.

• Do NOT expose this product to dripping or splashing, and do not place objects filled with

liquids, 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 baery 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 baeries to excessive heat (e.g. from storage in direct

sunlight, fire or the like).

• Do NOT wear while charging.

ENG

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 o 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 antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit dierent 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 transmier must not be co-located or operating in conjunction with any other

antenna or transmier.

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 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.

Management Regulation for Low-power Radio-frequency Devices

Article XII

According to “Management Regulation for Low-power Radio-frequency Devices” without

permission granted by the NCC, any company, enterprise, or user is not allowed to change

frequency, enhance transmiing power or alter original characteristic as well as performance to

an approved low power radio-frequency devices.

Article XIV

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 operated in compliance

with the Telecommunications Act.

The low power radio-frequency devices must be susceptible with the interference from legal

communications or ISM radio wave radiated devices.

ENG

REGULATORY AND LEGAL INFORMATION

DON’T aempt to remove the rechargeable lithium-ion baery from this product. Contact your

local Bose retailer or other qualified professional for removal.

Removal of the rechargeable lithium-ion baery 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 baeries properly, following local regulations. Do not incinerate.

Names and Contents of Toxic or Hazardous Substances or Elements

Toxic or Hazardous Substances and Elements

Part Name

Lead

(Pb)

Mercury

(Hg)

Cadmium

(Cd)

Hexavalent

(CR(VI))

Polybrominated

Biphenyl

(PBB)

Polybrominated

diphenylether

(PBDE)

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.

Date of Manufacture: The eighth digit in the serial number indicates the year of manufacture;

“1” is 2011 or 2021.

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 de México 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)

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

REGULATORY INFORMATION

ENG

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 global.Bose.com/registerglobal.Bose.com/register

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

otherwise used without prior wrien permission.

REGULATORY AND LEGAL INFORMATION

ENG

The following license disclosures apply to certain third-party software packages used as

components in the product.

Package: FreeRTOS

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

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

Zlib License

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 to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote

the original software. If you use this software in a product, an acknowledgment in the

product documentation would be appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be misrepresented as

being the original software.

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

Package: Mbed TLS 2.16.1

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

Apache License

Version 2.0, January 2004

hp://www.apache.org/licenses/hp://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

LICENSE DISCLOSURES

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“You” (or “Your”) shall mean an individual or Legal Entity exercising permissions granted by

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“Work” shall mean the work of authorship, whether in Source or Object form, made available

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LICENSE DISCLOSURES

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LICENSE DISCLOSURES

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Your sole responsibility, not on behalf of any other Contributor, and only if You agree to

indemnify, defend, and hold each Contributor harmless for any liability incurred by, or

claims asserted against, such Contributor by reason of your accepting any such warranty or

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END OF TERMS AND CONDITIONS

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in compliance with the License.

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Unless required by applicable law or agreed to in writing, software distributed under the License

is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either

express or implied.

See the License for the specific language governing permissions and limitations under

the License.

LICENSE DISCLOSURES

CONTENTS

ENG

WHAT’S IN THE BOX

Contents ...................................................................................................................................................... 14

BOSE APP

Download the Bose app ........................................................................................................................ 15

Add the headphones to an existing account ............................................................................... 15

HEADPHONE CONTROLS

Power on ...................................................................................................................................................... 17

Standby timer ................................................................................................................................... 17

Power o ...................................................................................................................................................... 18

Headphone functions ............................................................................................................................ 19

Media playback and volume ...................................................................................................... 19

Phone calls ........................................................................................................................................ 20

Action buon ................................................................................................................................... 21

SHORTCUTS

Use your shortcut ..................................................................................................................................... 22

Change or disable your shortcut ....................................................................................................... 22

SPOTIFY TAP ....................................................................................................................... 23

NOISE CANCELLATION

Noise cancelling modes ........................................................................................................................ 24

Change the noise cancelling mode .................................................................................................. 24

VOICE CONTROL

Access voice control ............................................................................................................................... 25

CONTENTS

ENG

BLUETOOTH® CONNECTIONS

Connect using the Bluetooth menu on your mobile device .................................................. 26

Disconnect a mobile device ................................................................................................................ 28

Reconnect a mobile device ................................................................................................................. 28

Connect another mobile device ........................................................................................................ 28

Identify connected mobile devices .................................................................................................. 28

Switch between two connected mobile devices ....................................................................... 29

Reconnect a previously connected device ................................................................................... 29

Clear the headphone device list ........................................................................................................ 29

WIRED CONNECTIONS

Connect the audio cable ...................................................................................................................... 30

BATTERY

Charge the headphones ........................................................................................................................ 31

Charging time ................................................................................................................................... 31

Hear the baery level .................................................................................................................... 31

HEADPHONE STATUS

Bluetooth status ...................................................................................................................................... 32

Baery status ........................................................................................................................................... 32

Charging status ........................................................................................................................................ 33

Update and error status ....................................................................................................................... 33

CONNECT BOSE PRODUCTS

Connect a Bose Smart Speaker or Soundbar .............................................................................. 34

Benefits .............................................................................................................................................. 34

Compatible products .................................................................................................................... 34

Connect using the Bose app ..................................................................................................... 34

Reconnect to a Bose Smart Speaker or Soundbar .................................................................... 35

CONTENTS

ENG

CARE AND MAINTENANCE

Store the headphones ........................................................................................................................... 36

Clean the headphones........................................................................................................................... 37

Replacement parts and accessories ............................................................................................... 37

Limited warranty ....................................................................................................................................... 37

Serial number location ........................................................................................................................... 38

TROUBLESHOOTING

Try these solutions first .......................................................................................................................... 39

Other solutions.......................................................................................................................................... 39

Restore the headphones to factory seings ................................................................................ 42

ENG

WHAT’S IN THE BOX

CONTENTS

Confirm that the following parts are included:

Bose QuietComfort 45 headphones

Carry case

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

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

Bose dealer or Bose customer service.

Visit:

worldwide.Bose.com/Support/QC45worldwide.Bose.com/Support/QC45

ENG

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 seings,

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 boom of page 15).

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.

BOSE APP

ENG

HEADPHONE CONTROLS

Power/Bluetooth

switch

Volume down

Action buon Multi-function buon

2.5 mm audio cable port

USB-C® port

Volume up

ENG

HEADPHONE CONTROLS

POWER ON

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

A voice prompt announces the baery level, and the status light glows according to

the current charge level (see page 32).

Standby timer

The standby timer conserves the baery when the headphones are not being used.

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

ENG

HEADPHONE CONTROLS

POWER OFF

Slide the Power/Bluetooth switch to the left.

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

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 buon

Volume down

FUNCTION WHAT TO DO

Play/Pause Press the Multi-function buon.

Skip forward Double-press the Multi-function buon.

Skip backward Triple-press the Multi-function buon.

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.

ENG

HEADPHONE CONTROLS

Phone calls

The Multi-function buon is located on the back of the right earcup. The microphone

is located near the front of the right earcup.

The Action buon is located on the back of the left earcup.

Action buon

Multi-function buon

Microphone

FUNCTION WHAT TO DO

Answer/End a call Press the Multi-function buon.

Decline an incoming call Press and hold the Multi-function buon for 1 second.

Answer a second incoming

call and put the current call

on hold

While on a call and a second incoming call is ringing,

press the Multi-function buon.

Decline a second incoming

call and stay on current call

While on a call and a second incoming call is ringing,

press and hold the Multi-function buon for 1 second.

Switch between two calls

While two calls are active, double-press the

Multi-function buon.

Create a conference call

While two calls are active, press and hold the

Multi-function buon for 3 seconds.

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

ENG

HEADPHONE CONTROLS

Action button

The Action buon allows you to quickly and easily switch between noise

cancelling modes.

The Action buon is located on the back of the left earcup.

Action buon

To switch between Quiet Mode and Aware Mode, press the Action buon.

For information about noise cancelling modes, see page 24.

ENG

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

• Access Spotify (see page 23)

• Access baery level

NOTE: By default, accessing baery level is enabled.

USE YOUR SHORTCUT

Press and hold the Action buon.

CHANGE OR DISABLE YOUR SHORTCUT

To change or disable your shortcut, use the Bose app. You can access this option from

the main screen.

SHORTCUTS

ENG

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 buon to play a recommendation based on your

listening taste.

2. Press and hold the Action buon again for the next recommendation made just

for you.

SPOTIFY TAP

ENG

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 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

Custom noise control (noise cancellation or wind block)

based on your listening 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: 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 buon.

A voice prompt announces the selected noise cancelling mode.

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

NOISE CANCELLATION

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 buon for 1 second.

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

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

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 15).

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.

SPOTIFY TAP

ENG

2. On your device, enable the Bluetooth feature.

NOTE: The Bluetooth feature is usually found in the Seings 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.

BLUETOOTH CONNECTIONS

SPOTIFY TAP

ENG

DISCONNECT A MOBILE DEVICE

To disconnect your mobile device, use the Bose app.

TIP: You can also use Bluetooth seings on your mobile device 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

recently-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 15) or use the

Bluetooth menu on your mobile device (see page 26).

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 Seings 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.

BLUETOOTH CONNECTIONS

ENG

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 devices.

All devices are cleared and the headphones are ready to connect.

ENG

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 baery 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 o when the the audio cable

is connected.

WIRED CONNECTIONS

ENG

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 baery level.

When the headphone baery is low, you hear “Baery low, please charge now.”

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

For more information, see “Baery status” on page 32.

BATTERY

ENG

The status light is located on the right earcup.

Headphone

status light

BLUETOOTH STATUS

Shows the Bluetooth connection status.

LIGHT ACTIVITY SYSTEM STATE

Blinking blue Ready to connect

Solid blue (10 seconds) Connected

BATTERY STATUS

Shows the baery level.

LIGHT ACTIVITY SYSTEM STATE

Solid white Medium to full charge

Solid amber Low charge

TIP: You can also check the baery level using the Bose app.

HEADPHONE STATUS

SPOTIFY TAP

ENG

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

ENG

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 aect 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.

CONNECT BOSE PRODUCTS

ENG

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 41.

CONNECT BOSE PRODUCTS

ENG

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 o the headphones when not in use.

• Before storing the headphones for more than a few months, make sure the baery

is fully charged.

CARE AND MAINTENANCE

ENG

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:

worldwide.Bose.com/Support/QC45worldwide.Bose.com/Support/QC45

LIMITED WARRANTY

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

global.Bose.com/warrantyglobal.Bose.com/warranty for details of the limited warranty.

To register your product, visit

global.Bose.com/registerglobal.Bose.com/register for instructions. Failure to

ENG

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

Scrim

ENG

TROUBLESHOOTING

TRY THESE SOLUTIONS FIRST

If you experience problems with your headphones:

• Check the state of the status light (see page 32).

• Charge the baery (see page 31).

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

• Try connecting another mobile device (see page 28).

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