Sennheiser HD 450BT Wireless Over Ear Headphones User guide

Sennheiser
Brand
Sennheiser
Model
HD 450BT Wireless Over Ear Headphones
Category
Headphones
Type
User guide
HD 450BT
SEBT4
Instruction manuals and product support
Bedienungsanleitungen und Produktbetreuung
Manuels d’utilisation et assistance produit
Instrucciones de uso y soporte del producto
Manuali d’istruzioni e supporto prodotto
Bedieningsinstructies en productondersteuning
Manuais de instruções e assistência ao produto
Instrukcje obsługi i wsparcie produktowe
Brugsanvisninger og produkthjælp
EN Quick Guide
DE Kurzanleitung
FR Guide rapide
ES Instrucciones resumidas
PT Guida rápidos
NL Beknopte handleiding
IT Guida rapida
DA Snabbguide
SV Bruksanvisning
Apple, the Apple logo and Siri are trademarks of Apple Inc., registered in the U.S. and other
countries. App Store is a service mark of Apple Inc. Android and Google play are registered
trademarks of Google Inc. The Bluetooth® word mark and logos are registered trademarks
owned by Bluetooth SIG, Inc. and any use of such marks by Sennheiser electronic GmbH &
Co. KG is under license.
www.sennheiser.com
www.sennheiser.com/download
www.sennheiser.com/smartcontrol
Sennheiser electronic GmbH & Co. KG
Am Labor 1, 30900 Wedemark, Germany
www.sennheiser.com, Publ. 10/19,
587116/A02, 770-00236
Safety
Guide
Quick
Guide
USB-A
USB-C
2.5 mm
3.5 mm
e Download the free Sennheiser Smart Control app.
Carry Case
Right R
USB-A
USB-C
2 HRS
LED off
Audio cable
Pakkaussisältö | Περιεχόμενα πακέτου | Zestaw obejmuje |
Ambalaj içeriği | Комплект поставки |
| | | 㼱㋪᯹㇮⚁| Paket termasuk
Kuulokkeiden lataaminen | Φόρτιση των ακουστικών |
Ładowanie słuchawek | Kulaklık setini şarj etme | Зарядка
аккумуляторов наушников | |
| | 䄩‡㼵㣮㍉䂝᥵ | Mengisi baterai
headphone
Käytä sovellusta kuulokkeiden käyttöönottoa ja muita
toimintoja varten. | Χρησιμοποιήστε την εφαρμογή για τη
ρύθμιση και τις πρόσθετες λειτουργίες των ακουστικών. | Aplikację
można wykorzystać do konfiguracji i ustawień dalszych
funkcji słuchawek. | Uygulamayı kulaklığın kurulumu ve diğer
işlevleri için kullanınız. | Используйте приложение для
настройки и доступа к другим функциям наушников. | ቿኴ዇ት
∎䞷ሺᇬኁ዁ኸዐቑሸቬቍቮ㳮厌ት岼⸩ሺ቉ሲቃሸ_庆抩扖ㄣ
䞷䲚ㄞ幍函勂㧉㒥∎䞷勂㧉䤓␅⸒┮厌ᇭ_嵚択拝㑘䞷䲚ㄞ岼⸩
勂㳮㒥∎䞷勂㳮䤓␅Ⅵ┮厌ᇭ_뾙麑꬀넍鿅鲙ꌭ韥鱚ꗄ꫙뇊냹
겙뼾뼍ꇙꐩ꼦냹ꩡ끞뼍겢겑꿙 | Gunakan aplikasi untuk
peralatan dan fungsi lain earphone.
Active Noise Cancellation ANC
ON/OFF
Power ON/OFF
Right R
“Connected“ “Lost connection“
Left L
Right R
Voice assistant
ON/OFF
Siri, Google Assistant,
Baidu, ...
... depending on
mobile phone.
Press
1x
ON
OFF
OFF
ON
2s
Hold
2s
Hold
Power
button LED
Activating/deactivating the voice assistant |
Sprachassistent aktivieren/deaktivieren | Activer-
/désactiver l'assistant vocal | Activar/desactivar el
asistente personal | Ativar/desativar assistente de
voz | Spraakassistent activeren/deactiveren |
Attivare/disattivare l'assistente vocale | Aktivering/-
deaktivering af taleassistenten | Aktivera/avaktivera
talassistent
Press
1x
Press
1x
Press
1x
Switching the headphones on/off | Kopfhörer ein-/ausschal-
ten | Allumer/éteindre le casque | Encender/apagar los
auriculares | Li-gar/desligar os auscultadores | De hoofdtele-
foon in-/uitschakel-en | Accensione/spegnimento delle
cuffie | Sådan tændes og slukkes hovedtelefonerne | Hörlurar
slås på/av
Using the active noise cancellation ANC | Aktive Geräusch-
unterdrückung ANC verwenden | Utiliser la réduction active
de bruit ANC | Utilizar la atenuación activa del ruido ANC |
Utilizar o controlo ativo de ruído ANC | Actieve ruisonder-
drukking ANC toepassen | Utilizzare la soppressione attiva
dei rumori ANC | Anvendelse af støjundertrykkelse ANC |
Använda aktiv dämpning av bakgrundsljud ANC
“Pairing“
1 2
3
HD 450BT
Keyword: 0000
4
“Connected“
Menu
Bluetooth on
Bluetooth off
Menu
Bluetooth on
Bluetooth off
Menu
Add Device
20 cm
OFFOFF
4s
Hold
Right R
Pairing and connecting to a Bluetooth device | Mit einem
Bluetooth-Gerät koppeln (Pairing) und verbinden | Appairer et
connecter le casque à un appareil compatible Bluetooth |
Sincronizar y conectar con un dispositivo Bluetooth |
Emparelhar e ligar a um dispositivo Bluetooth | Met een
Bluetoothapparaat pairen en verbinden | Abbinamento e
collegamento a un dispositivo Bluetooth | Parring og
tilslutning til en Bluetooth-enhed | Anslut till en Bluetooth-en-
het
1 2
3
OFF
Right R
Audio cable
2.5 mm 3.5 mm
OUTIN
1
2
1
2
Using the audio cable (flight mode) | Audiokabel benutzen
(Flugmodus) | Utilisation du câble audio (mode Avion) | Usar
elcable de audio (modo de avión) | Utilizzo del cavo audio
(modalità aereo) | De audiokabel gebruiken (vliegtuigmodus) |
Utilizar o cabo áudio (modo de voo) | Używanie przewodu
audio (tryb samolotowy) | Sådan bruges lydkablet (flymodus)
Folding and storing | Falten und aufbewahren | Plier et
stocker | Plegar y conservar | Dobrar e guardar | Vouwen
en opbergen | Piegare e conservare | Foldning og
opbevaring | Vika ihop och förvara
Right R
Adjusting the volume | Lautstärke einstellen | Régler le volume |
Ajustar el volumen | Ajustar o volume | Volume instellen | Imposta-
zione del volume | Indstilling af lydstyrke | Ställ in volymen
[Z]
SENN
HEISER
HD
350BT
SEBT3
HD
450BT
SEBT4
EN
Safety Guide
DE
Sicherheitshinweise
FR
Consignes de securite
ES
lndicaciones de seguridad
PT
Guia de seguranc,;a
NL Veiligheidsgids
IT
Guida per
la
sicurezza
DA
Sikkerhedsanvisninger
SV
Sakerhetsanvisningar
Fl
Turvaohjeita
EL
Yrrood~w:;
acr<paAf:ia<;
PL
lnstrukcja
bezpieczeristwa
TR
Gi.ivenlik Kilavuzu
RU
111HCTPYK4i-15l
no
6e3onacHOCTi-1
JA
t-77'-1151'
r'
ZH
3i:~m;;J;
TW 3i:~51~~J~
KO
'2.1-~
::X::I~
ID
Petunjuk Keselamatan
Sennheiser electronic GmbH & Co,
KG
Am
Labor 1, 30900 Wedemark, Germany
www.sennheiser.com Publ.
11/19,
587113/A01*, 770-00248
EN
English
Important
safety instructions
t>
Read
the
instruction
manual,
safety
guide,
quick
guide
(as
supplied)
carefully
and
completely
before
using
the
product.
[> Always
include
this
safety
guide
when
passing
the
product
on
to third
parties.
t>
Do
not
use
an
obviously
defective
product.
[>
Use
only
the
product
in
environments
where
wireless
Bluetooth
®
trans-
mission
is
permitted.
Preventing
damage
to
health
and
accidents
t>
Do
not
listen
at
high
volume
levels
for
long
periods
of
time
to
prevent
hearing
damage.
t>
The
product
generates
stronger
permanent
magnetic
fields
that
could
cause
interference
to
cardiac
pacemakers,
implanted
defibrillators
(ICDs)
and
other
implants.
Always
maintain
a
distance
of
at
least
3.94
" (10
cm)
between
the
product
component
containing
the
magnet
and
the
cardiac
pacemaker,
im-
planted
defibrillator
or
other
implant.
t>
Keep
the
product,
accessories
and
packaging
parts
out
of
reach
of
chil-
dren
and
pets
to
prevent
accidents.
Swallowing
and
choking
hazard.
t>
Do
not
use
the
product
in
an
environment
that
requires
your
special
at-
tention
(e.g. in
traffic).
Preventing
damage
to
the
product
and
malfunctions
t>
Always
keep
the
product
dry
and
do
not
expose
it
to
extreme
tempera-
tures
(hairdryer,
heater,
extended
exposure
to
sunlight,
etc.)
to
avoid
cor-
rosion
or
deformation.
The
normal
operating
temperature
is
from
0 °C
to
40
°
C/32
°F
to
104 °
F.
t>
Use
only
attachments/accessories/spare
parts
supplied
or
recommend-
ed
by
Sennheiser.
t>
Only
clean
the
product
with
a
soft,
dry
cloth.
Safety
instructions
for
the
Lithium-Polymer
battery
pack
WARNING
=l
In
extreme
cases
,
rechargeable
batteries
may
leak
and
may
cause
the
following
hazards
if
abused
or
misused:
•
explosion
•
heat
generation
•
fire
development
•
smoke
or
gas
development
Dispose
of
defective
products
with
built-in
rechargeable
batteries
at
special
collection
points
or
return
them
to
your
specialist
dealer.
Only
use
rechargeable
batteries
recommended
by
Sennheiser
and
the
appropriate
chargers.
Only
charge
the
product/
rechargeable
batteries
at
ambient
temperatures
between
10 °
C/50
°F
and
40
°
C/104
°
F.
Switch
battery
pack-powered
products
off
after
use.
When
not
using
for
extended
periods
of
time,
recharge
the
product/
rechargeable
batteries
regularly
(about
every
3
months).
Do
not
heat
the
product/
rechargeable
batteries
above
70
°C/158
°
F.
Avoid
exposure
to
sunlight
and
do
not
throw
the
product/
rechargeable
batteries
into
fire.
Notes
on
data
collection
and
processing
and
on
firmware
updates
This
product
stores
individual
settings
such
as
the
volume,
the
sound
profi-
les
and
the
Bluetooth
addresses
of
paired
devices.
This
data
is
required
for
the
operation
of
the
product
and
is
not
transferred
to
Sennheiser
or
compa-
nies
commissioned
by
Sennheiser
and
is
not
processed.
Using
the
"
Sennheiser
Smart
Control"
app,
you
can
update
the
firmware
of
the
product
for
free
via
an
Internet
connection.
If
the
device
on
which
the
app
is
installed
is
connected
to
the
Internet,
the
following
data
is
automati-
cally
transferred
to
and
processed
by
Sennheiser
servers
in
order
to
provide
and
transfer
suitable
firmware
updates:
hardware
indentifier,
hardware
re-
vision
number,
firmware
version
of
the
product
and
version
of
the
app.
The
data
will
only
be
used
as
specified
and
will
not
be
stored
permanently.
If
you
do
not
want
this
data
to
be
transferred
and
processed,
do
not
connect
to
the
Internet.
Intended
use/Liability
These
headphones
are
designed
as
an
accessory
for
Bluetooth
compliant
devices
for
wireless
audio
communication
like
music
playback
and
tele-
phone
calls
via
Bluetooth
wireless
technology.
It
is
considered
improper
use
when
this
product
is
used
for
any
application
not
named
in
the
associated
product
guides.
Sennheiser
does
not
accept
liability
for
damage
arising
from
abuse
or
mis-
use
of
this
product
and
its
attachments/accessories.
Sennheiser
is
not
liable
for
damages
to
USB
devices
that
are
not
consistent
with
the
USB
specifications.
Sennheiser
is
not
liable
for
damages
resulting
from
the
loss
of
connection
due
to
flat
or
over
aged
rechargeable
batteries
or
exceeding
the
Bluetooth
transmission
range.
Before
putting
the
product
into
operation
please
observe
the
respective
country-specific
regulations.
Manufacturer
Declarations
More
information
on
legal
compliance
labels
can
be
found
at
the
end
of
this
document.
Warranty
Sennheiser
electronic
GmbH
&
Co.
KG
gives
a
warranty
of
24
months
on
this
product.
For
the
current
warranty
conditions,
please
visit
our
website
at
www.sennheiser.com
or
contact
your
Sennheiser
partner.
FOR
AUSTRALIA
ONLY
Sennheiser
goods
come
with
guarantees
that
cannot
be
excluded
under
the
Australian
Consumer
Law.
You
are
entitled
to
a
replacement
or
refund
for
a
major
failure
and
compensation
for
any
other
reasonably
foreseeable
loss
or
damage.
You
are
also
entitled
to
have
the
goods
repaired
or
replaced
if
the
goods
fail
to
be
of
acceptable
quality
and
the
failure
does
not
amount
to
a
major
failure.
This
warranty
is
in
addition
to
other
rights
or
remedies
under
law.
Nothing
in
this
warranty
excludes,
limits
or
modifies
any
liability
of
Sennheiser
which
is
imposed
by
law,
or
limits
or
modifies
any
remedy
available
to
the
consumer
which
is
granted
by
law.
To
make
a
claim
under
this
Warranty,
C
ontact:
Sennheiser
Technical
Services
and
Spare
Parts
Sales,
c/o
Linfox,
Gate
3, 1 Fox
Lane,
Erskine
Park,
2759,
NSW
Australia,
phone:
+61 2
9910
6700
email:
[email protected]
All.
expenses
of
claiming
the
warranty
will
be
borne
by
the
person
making
the
claim.
The
Sennheiser
International
Warranty
is
provided
by
Sennheiser
Australia
Pty
Ltd (ABN
68165
388
312), The Zenith,
Tower
A,
L14,
821
Pacific
Highway
Chatswood
NSW
2067,
Australia.
In
compliance
with
the
following
requirements
•
Product
Safety
Directive
(2001/95/EC)
•
Compliant
to
Sound
Pressure
Limits
according
to
country-specific
re-
quirements
EU
Declaration
of
Conformity
• RoHS
Directive
(2011/65/EU)
CE
Hereby,
Sennheiser
electronic
GmbH
&
Co.
KG
declares
that
the
radio
equipment
type
SEBT3,
SEBT4
is
in
compliance
with
Radio
Equipment
Di-
rective
(2014/53/EU).
The
full
text
of
the
EU
declaration
of
conformity
is
available
at
the
following
internet
address:
www.sennheiser.com/download.
Notes
on
disposal
•
Battery
Directive
(2006/66/EC
&
2013/56/EU)
• WEEE
Directive
(2012/19/EU)
The
symbol
of
the
crossed-out
wheeled
bin
on
the
pro-
duct,
the
battery/rechargeable
battery
(if
applicable)
and/or
the
packaging
indicates
that
these
products
must
not
be
disposed
of
with
normal
household
waste,
but
must
be
disposed
of
separately
at
the
end
of
their
operational
life-
time.
For
packaging
disposal,
please
observe
the
legal
regulations
on
waste
segregation
applicable
in
your
country.
Further
information
on
the
recycling
of
theses
products
can
be
obtained
from
your
municipal
administration,
from
the
municipal
collection
points,
or
from
your
Sennheiser
partner.
The
separate
collection
of
waste
electrical
and
electronic
equipment,
batter-
ies/rechargeable
batteries
(if
applicable)
and
packagings
is
used
to
promote
the
reuse
and
recycling
and
to
prevent
negative
effects
caused
by
e.g.
poten-
tially
hazardous
substances
contained
in
these
products.
Herewith
you
make
an
important
contribution
to
the
protection
of
the
environment
and
public
health.
HD 450BT | 1
HD 450BT
Around-ear headphones
Model: SEBT4
Instruction manual
Use the search function, the navigation (left) or the following links:
Start
“Product overview”
“Getting started”
“Using the headphones”
“FAQ/If a problem occurs ...”
“Specifications”
Sennheiser electronic GmbH & Co. KG
Am Labor 1
30900 Wedemark
Germany
www.sennheiser.com
Version: 02/21 A03
Important safety instructions
2 | HD 450BT
Important safety instructions
▷Read this instruction manual carefully and completely before
using the product.
▷Always include this instruction manual when passing the product
on to third parties.
▷Do not use the product if it is obviously defective or makes loud,
unusual (whistling or beeping) noise.
▷Only use the product in environments where Bluetooth® wireless
transmission is permitted.
Preventing damage to health and accidents
▷Protect your hearing from high volume levels. Permanent
hearing damage may occur when headphones are used
at high volume levels for long periods of time. Sennheiser
headphones sound exceptionally good at low and medium volume
levels.
▷The product generates stronger permanent magnetic
fields that could cause interference with cardiac pace-
makers, implanted defibrillators (ICDs) and other
implants. Always maintain a distance of at least 3.94"/10 cm
between the product component containing the magnet and the
cardiac pacemaker, implanted defibrillator, or other implant.
▷Keep the product, accessories and packaging parts out of reach
of children and pets to prevent accidents. Swallowing and chok-
ing hazard.
▷Do not use the product in an environment that requires your spe-
cial attention (e.g. in traffic or when performing skilled jobs).
Preventing damage to the product and malfunctions
▷Always keep the product dry and do not expose it to extreme tem-
peratures (hairdryer, heater, extended exposure to sunlight, etc.)
to avoid corrosion or deformation. The normal operating tempera-
ture is from 0 to 40 °C/32 to 104 °F.
▷To avoid loud, unusual (whistling or beeping) noise and to ensure
proper noise cancellation, do not cover the microphone openings
of the active noise cancellation circuitry located on the outside of
the ear cups.
▷Use only attachments/accessories/spare parts supplied or rec-
ommended by Sennheiser.
▷Clean the product only with a soft, dry cloth.
▷Use the product with care and store it in a clean, dust-free envi-
ronment.
Safety instructions for the lithium polymer rechargeable battery
WARNING
If abused or misused, the rechargeable batteries may leak.
In extreme cases, they may even present a risk of:
• heat generation,
• fire development,
•explosion,
•smoke or gas development.
Important safety instructions
HD 450BT | 3
Notes on data collection and processing and on firmware updates
This product stores individual settings such as the volume and the
Bluetooth addresses of paired devices. This data is required for the
operation of the product and is not transferred to Sennheiser or com-
panies commissioned by Sennheiser and is not processed.
Using the “Sennheiser Smart Control” app, you can update the firm-
ware of the product for free via an Internet connection. If the device
on which the app is installed is connected to the Internet, the follow-
ing data is automatically transferred to and processed by Sennheiser
servers in order to provide and transfer suitable firmware updates:
hardware identifier, hardware revision number, firmware version of
the product, operating system type (Android, iOS) and version, ver-
sion of the app. The data will only be used as specified and will not
be stored permanently.
If you do not want this data to be transferred and processed, do not
connect to the Internet.
Only use rechargeable batteries and chargers
recommended by Sennheiser.
Only charge the product / rechargeable batteries at
ambient temperatures between +10 °C to +40 °C/50 °F
to 104 °F.
Do not heat the product / rechargeable batteries above
+70 °C/140 °F. Avoid exposure to sunlight and do not
throw the product / rechargeable batteries into fire.
When not using the product / rechargeable batteries for
extended periods of time, charge them regularly (about
every three months).
Switch rechargeable battery-powered products off after
use.
Dispose of defective products with built-in rechargeable
batteries at special collection points or return them to
your specialist dealer.
Important safety instructions
4 | HD 450BT
Intended use/Liability
These headphones have been designed as an accessory for Blue-
tooth compliant devices. They are intended for wireless audio com-
munication such as music playback and phone calls via Bluetooth
wireless technology.
It is considered improper use when the product is used for any appli-
cation not named in the corresponding product documentation.
Sennheiser does not accept liability for damage arising from misuse
or improper use of this product and its attachments/accessories.
Sennheiser is not liable for damages to USB devices that are not con-
sistent with the USB specifications.
Sennheiser is not liable for damages resulting from the loss of con-
nection due to flat or overaged rechargeable batteries or exceeding
the Bluetooth transmission range.
Before putting into operation, please observe the respective coun-
try-specific regulations.
Package contents
HD 450BT | 5
Package contents
Online you can find:
• this detailed instruction manual and additional information
www.sennheiser.com/download
•the Sennheiser Smart Control app for configuring the head-
phones and for additional functions www.sennheiser.com/smart-
control
HD 450BT around-ear headphones
Model: SEBT4
USB charging cable with USB-C and USB-A connec-
tor
Analog audio cable with 3.5 mm jack plug and 2.5 mm
jack plug, length approx. 1.5 m
Carry case
Quick guide
Safety guide
A list of accessories can be found on the HD 450BT product
page at www.sennheiser.com. Contact your local Sennheiser
partner: www.sennheiser.com/service-support.
Product overview
6 | HD 450BT
Product overview
HD 450BT model: SEBT4
Headband
Ear cup joints
Ear cups, steplessly adjustable
On/off button for the headphones and the active noise
cancellation ANC
pressing for 4 seconds activates the Bluetooth pairing
mode
pressing 1x activates/deactivates ANC
LED
Input for analog audio cable;
when a cable is connected, flight mode is activated/Blue-
tooth is deactivated
USB-C socket for charging
Right R
Left L
4
5
6
2
2
3
7
A
C
B
9
1
8
0
Product overview
HD 450BT | 7
Overview of the LED display
During operation
During phone calls
Volume – button (volume down)
Volume + button (volume up)
3-way multi-function button for music and call functions
Voice assistant button
Ear pads
Speech microphones (2 pcs.) for phone calls
LED Meaning; the headphones
flashes blue 3x switch on
flashes blue 3x are connected to a device via Blue-
tooth
flashes red/
blue are in Bluetooth pairing mode
flashes red 3x
are not connected to a device via
Bluetooth or the connection has been
lost
flashes purple
3x ANC is activated/deactivated
LED Meaning
flashes blue Incoming call
flashes red
Incoming call and the rechargeable
battery of
the headphones is almost empty
If the LED does not light up immediately during charging, clean
the charging socket and charge the headphones until the LED
lights up again (> 11).
3x
3x
3x
3x
Product overview
8 | HD 450BT
Notes on voice prompts
The headphones output voice prompts for various functions (see
examples below).
Notes on beeps/acoustic signals
The headphones output beeps/acoustic signals for the following
functions.
Voice prompt Meaning/headphones
“Power on” are switched on
“Power off” are switched off
“Connected” are connected via Bluetooth
“Lost connection” are not connected via Bluetooth
“Pairing” are in Bluetooth pairing mode
“Call rejected” incoming call rejected
“Call ended” call ended
“More than xx hours
playtime”
Rechargeable battery has the
stated charge level
“Recharge headset” Rechargeable battery is empty.
Recharge the headphones.
Acoustic signal Meaning/headphones...
2x low-pitched beep minimum volume is reached
2x high-pitched beep maximum volume is reached
Getting started
HD 450BT | 9
Getting started
1. Charging the rechargeable battery
The headphones' rechargeable battery is not fully charged upon
delivery. Before using the headphones for the first time, charge the
rechargeable battery for a complete charging cycle without interrup-
tion (> 11).
2. Installing the Smart Control app on your
smartphone
The Sennheiser Smart Control app allows you to use all functions
and settings of the headphones and to e.g. adjust the sound to your
liking using the equalizer (> 15).
3. Connecting the headphones to a Bluetooth
device
Connect the headphones to your smartphone via Bluetooth (> 12).
USB-AUSB-C
“Sennheiser Smart Control”
4s
Hold
Getting started
10 | HD 450BT
4. Putting the headphones on and adjusting the
headband
For good sound quality and best possible wearing comfort, the head-
band can be adjusted to properly fit your head (> 17).
Using the headphones
HD 450BT | 11
Using the headphones
Information on the rechargeable battery
and the charging process
The headphones have a built-in rechargeable battery. A complete
charging cycle takes approx. 2 hours. Before using the headphones
for the first time, charge the rechargeable battery for a complete
charging cycle without interruption.
When the headphones are being charged, the LED lights up (> 7).
Once the headphones are fully charged, the LED flashes blue for 5
minutes and then goes off. When the battery charge drops to a criti-
cal level, a voice prompt asks you to recharge the headphones
(“Recharge headset”).
Sennheiser recommends using the supplied USB cable and a com-
patible standard USB power supply for charging the headphones.
While the headphones are being charged, you can still listen to
music or make phone calls. In this case, however, the charging time
may be longer.
Charging the headphones' rechargeable
battery
1. Connect the USB-C connector of the charging cable to the USB
socket of the headphones.
2. Connect the USB-A connector to a corresponding socket of a USB
power source (*to be ordered separately). Make sure that the USB
power source is connected to the power supply system.
The charging process of the headphones begins. The LED dis-
plays the charge status:
Right R
2 HRS
USB-A
USB-C
LED Off
*
Using the headphones
12 | HD 450BT
Connecting the headphones to a
Bluetooth device
To be able to use the Bluetooth connection, you must register both
devices (headphones and e.g. smartphone) once. This process is
called pairing.
If operation differs from the steps mentioned, also refer to the
instruction manual of the Bluetooth device you are using.
Information on the Bluetooth wireless
connection
The headphones are compatible with Bluetooth 5.0.
If your audio source supports one of the following high-resolution
audio encoding methods, music is automatically played in high audio
quality: aptX, aptX LL or AAC. Otherwise the headphones will play
your music in normal audio quality (SBC).
Paired devices establish the Bluetooth wireless connection immedi-
ately after switch-on and are ready for use.
On switch-on, the headphones automatically try to connect to the
last two connected Bluetooth devices. The headphones can save the
connection profiles of up to eight Bluetooth devices with which they
have been paired. Audio playback is only possible from one device at
a time.
If you pair the headphones with the ninth Bluetooth device, the saved
connection profile of the least used Bluetooth device will be over-
written. If you want to re-establish a connection with the overwritten
Bluetooth device, you have to pair the headphones again.
LED Meaning
lights up red Rechargeable battery is being charged
flashes blue
for 5 minutes,
the LED then
goes off
Rechargeable battery is fully charged
If the LED does not light up immediately during charging, clean
the charging socket and charge the headphones until the LED
lights up again (> 11).
You can speed up the charging process by charging the head-
phones when they are switched off.
for 5 min
LED Off
When you switch on the headphones for the first time, they
automatically switch to pairing mode.
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Sennheiser HD 450BT Wireless Over Ear Headphones User guide

Sennheiser
Brand
Sennheiser
Model
HD 450BT Wireless Over Ear Headphones
Category
Headphones
Type
User guide
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