Headphones
L4SE
User manual
Register your product and get support at
www.philips.com/support
Amazon ASIN:
B0FMKQSFYH
1 Important safety instructions 2
Hearing safety 2
General information 2
2 Your active noise canceling wireless
headphones 3
What's in the box 3
Other devices 3
Overview of active noise canceling
wireless headphones 4
3 Get started 5
Charge the battery 5
App download 5
Pair the headphones with your
Bluetooth device for the �rst time 5
Pair the headphones with another
Bluetooth device 6
Wired Connection 6
4 Use your headphones 7
Connect the headphones to your Bluetooth
device 7
Power on/off 7
Google Fast Pair 7
Multi-point connection 7
ANC/Awareness control 8
Manage your calls and music 8
Voice assistant 8
Other headphones indicator status 9
Wearing Detection 9
5 Reset the headphones 9
7 Notice 10
Declaration of conformity 10
Disposal of your old product
and battery 10
Remove the integrated battery 10
Compliance with EMF 11
Environmental information 11
Notice of compliance 11
Contents
6 Technical data 10
8 Frequently asked questions 13
9 Trademarks 14
2 EN
1 Important
safety
instructions
Hearing safety
• Be sure to observe the following guidelines
when using your headphones.
• Listen at reasonable volumes for reasonable
periods of time.
• Be careful not to adjust the volume continuously
upwards as your hearing adapts.
• Do not turn up the volume so high that you
can't hear what's around you.
• You should use caution or temporarily
discontinue use in potentially hazardous
situations.
• Excessive sound pressure from headphones and
headphones can cause hearing loss.
• Using headphones with both ears covered while
driving is not recommended and may be illegal
in some areas.
• For your safety, avoid distractions from music or
phone calls while in traffic or other potentially
dangerous environments.
General information
To avoid damage or malfunction:
Danger
To avoid hearing damage, limit the time you
use headphones at high volume and set the
volume to a safe level. The louder the volume,
the shorter the safe listening time is.
Caution
Operating and storage temperatures and
humidity
• Store in a place where the temperature is
between -20°C (-4°F) and 50°C (122 °F) with
up to 90% relative humidity.
• Operate in a place where the temperature is
between 0°C (32°F) and 45°C (113 °F) with up
to 90% relative humidity.
• Battery life may be shorter in high or low
temperature conditions.
• Do not expose headphones to excessive heat.
• Do not drop your headphones.
• Headphones shall not be exposed to dripping
or splashing. (Refer to the IP rating of specific
product)
• Do not allow your headphones to be submerged
in water.
• Do not charge your headphones when the
connector or socket is wet.
• Do not use any cleaning agents containing
alcohol, ammonia, benzene, or abrasives.
• Use a clean, damp cloth to clean your
headphones - especially the sound conduits and
the microphone holes - regularly and avoid
buildup of substances such as sweat or earwax.
• If any sweat or water droplets are left in the
sound conduits, air holes or microphone holes,
the sound level will temporarily drop or cut out
entirely. This is not a malfunction. Use a soft,
damp cloth to dry the headphones thoroughly.
Alternatively, remove the earbud tips, turn the
sound conduits downward and gently tap the
headphones about five times on a dry cloth or
similar to remove any water collected inside.
• Be sure the headphones are completely dry
before charging and using. Avoid using
disposable alcohol pads or other substances for
cleaning.
• The integrated battery shall not be exposed to
excessive heat such as sunshine, fire or the like.
• Danger of explosion if battery is incorrectly
replaced. Replace only with the same or
equivalent type.
• To achieve the specific IP rating, the charging
slot cover must be closed.
• Disposal of a battery into fire or a hot oven, or
mechanically crushing or cutting a battery, can
result in an explosion.
• Leaving a battery in an extremely high
temperature surrounding environment can result
in an explosion or the leakage of flammable
liquid or gas.
• A battery subjected to extremely low air pressure
may result in an explosion or the leakage of
flammable liquid or gas.
• Replacement of a battery with an incorrect type
risks severely damaging the headphones and the
battery (for example, in the case of some lithium
battery types).
• If the headset is not used for a long time, the
rechargeable battery will begin to lose its charge.
To avoid this loss, please fully charge the battery
at least once every three months.
• To avoid risk of fire, the equipment is supplied
only by external power source which output shall
comply with PS1 (with output capacity less than
or equal to15W).
3 EN
2 Your active
noise canceling
wireless
headphones
Philips active noise canceling wireless
headphones Fidelio L4SE
Carrying case
Audio cable
USB-C charging cable (for charging only)
Congratulations on your purchase, and welcome
to Philips! To fully bene�t from the support that
Philips offers, register your product at
www.philips.com/support.
With the Philips over-ear headphones, you can:
• Enjoy convenient wireless handsfree calls
• Enjoy and control music wirelessly
• Switch between calls and music
• Enjoy noise cancellation
What's in the box
Other devices
A mobile phone or device (e.g. notebook, tablet,
Bluetooth adapters, MP3 players etc) which
supports Bluetooth and is compatible with the
headphones.
Global Warranty
Safety lea�et
Quick start guide
www.philips.com/welcome
Headphones
L4SE
Amazon ASIN:
B0FMKQSFYH
4 EN
4
5
1
2
3
7
6
ANC/Awareness mode button
Touch Control Panel
Voice Assistant button
LED indicator
Power button
USB-C charging slot
2.5mm Audio jack
1
2
3
4
5
6
7
Overview of your active noise canceling wireless
headphones
5 EN
Connect the supplied USB charging cable to:
• The USB type C charging slot on the
headphones;
• The charger/USB port of a computer.
Tip
Normally, a full charge takes 2 hours.
Pair the headphones with
your Bluetooth device for
the �rst time
LED turns white during charging and turns
off when the headphones are fully charged.
3 Get started
Charge the battery
• Before you use your headphones, charge the
battery for 2 hours for optimum battery
capacity and lifetime.
• Use only the original USB-C charging cable to
avoid any damage.
• Finish your call before charging. Connecting the
headphones to charge will power them off.
• If the headset is not used for a long time, the
rechargeable battery will begin to lose its
charge. To avoid this loss, please fully charge
the battery at least once every three months.
Note
Scan the QR code/press 'Download' button or
search 'Philips Headphones' in the Apple App
Store or Google Play to download the app.
The Philips Headphones App puts you in charge
of the music you are listening to. You can
customize the sound so that your music and
calling experience always best suits your needs.
App download
Make sure that the Bluetooth device is turned
on and its Bluetooth feature is activated.
Make sure that the headphones are fully
charged and turned off.
The blue and white LEDs �ash alternately.
Press and hold for 2 seconds to turn on the
headphones, they will be in pairing mode and
ready to connect.
The headphones remain in pairing mode
for 5 minutes.
1
2
3
philips.to/headapp
Get Started
2h
6 EN
When the headphones' battery is depleted or
your device lacks Bluetooth capability, they can
be connected to the device using a 2.5mm audio
cable ( included in the packaging).
Wired Connection
The function keys will be disabled when
using line-in mode.
The headphones can store 4 devices in the
memory. If you try to pair more than 4 devices,
the earliest paired device will be replaced by the
new one.
Note
Pair the headphones with
another Bluetooth device
If you want to pair another Bluetooth device with
the headphones, turn off the headphones, then
press and hold for 5 seconds until the blue and
white LEDs �ash alternately. Your headphones are
in pairing mode now and you could discover the
second device as per normal pairing.
The following example shows you how to pair the
headphones with your mobile phone.
Pair the headphones with the Bluetooth
device. For detailed information, refer to the
user manual of your Bluetooth device.
Activate the Bluetooth feature of your
mobile phone, select Fidelio L4 SE
4
Fidelio L4 SE
Tip
05"
7 EN
When streaming audio from device 1, receiving
a call from device 2 will automatically pause
device 1 playback. And the call will be routed
automatically to headphones.
Ending the call will automatically resume
playback from device 1.
4 Use your
headphones
Connect the headphones
to your Bluetooth device
Turn on your mobile phone/ Bluetooth
device.
Press and hold the on/off button to turn the
headphones on.
The blue LED will turn on 2s.
The headphones are reconnected to the
last connected mobile phone/ Bluetooth
device automatically.
If you turn on the mobile phone/Bluetooth
device or activate the Bluetooth feature after
turning on the headphones, you have to
reconnect the headphones and mobile phone/
Bluetooth device manually.
If the headphones fail to connect to last
connected Bluetooth device within range of
5 minutes, it will change to pairing mode,
then will switch off automatically if it’s still
not connected to any Bluetooth device 5
minutes later.
On/off
Task Button
Turn the
headphones on
Turn the
headphones off
Operation
Press and hold for 2
seconds
Press and hold for 3
seconds
The white LED is
on and fades out
Multi-point connection
Pairing
• Pairing the headphones to 2 devices, e.g. mobile
phone and notebook.
Switch between device
• At anytime, only can listen to music from 1 device.
Another device will be for phone call.
• Pause the audio from 1 device and then start play
audio from the another device.
Google Fast Pair
The headphone supports Google Fast Pair:
• Enter pairing mode of the headphones.
• The Bluetooth of Android smartphone should
also turn on.
• The headphones will be automatically
detected by the Android smartphone.
Fidelio L4 SE
Tap to pair. Device will be tied to
Note
Note
1
2
Tip
Power on/off
8 EN
Call control
Task
Button
Operation
Pick up/hang up
a call
Answer new call
during a call
Touch Control
Panel
Tape twice
Reject call Touch Control
Panel
Touch Control
Panel
Touch one
second
Tape twice
Reject new call
during a call
Touch Control
Panel
Touch one
second
ANC/Awareness control
Switch call when
answer 2 calls
Touch Control
Panel
Tape twice
Manage your calls and
music
Music control
Task Button Operation
Touch Control
Panel
Touch Control
Panel
Touch Control
Panel
Play or pause
music
Tape twice
Swipe up/
Swipe down
Swipe
forward
Swipe
backward
Adjust volume
Next track
Previous track
Touch Control
Panel
R
x1
Different ANC modes can be toggled via pressing
button one time on the right earcup.
• ANC function is automatically activated
when headphone is placed on the ear.
• Press button one time, it will turn the
ANC function off.
• Press button one time again, it will
change to awareness mode.
• When powered on and with battery charge, this
model supports Active Noise Cancelation (ANC)
both wirelessly via Bluetooth and wired via the
3.5mm jack.
Note
Button
Task
ANC ON Press one time
Press one time
Press one time
Awareness
mode
ANC OFF
Operation
Palm cover whole
touch control panel
area for 1s
Quick
awareness
Touch
Control
Panel
Voice Assistant
OperationTask Button
Trigger Voice
(Siri/Google)
Assistant
Press once
Stop Voice
Assistant
Press once
Voice
Assistant
button
Voice
Assistant
button
• You will hear a tone that indicates when the
volume has reached maximum level.
Note
9 EN
Other headphones
indicator status
Headphones status Indicator
The headphones are
connected to a Bluetooth
device, while the
headphones in standby
mode or while you are
listening to music
The blue LED blinks
one time in 5
seconds
The headphones are
ready for pairing
The LED �ashes blue
and white alternately
The headphones are on
but not connected to a
Bluetooth device
Low battery level The white LED blinks
one time in 5 seconds
until it is out of power
Battery is fully charged
White LED is off
The white LED �ashes
slowly. If no
connection can be
made, the headphones
will turn itself off
within 5 minutes
Wearing Detection
• The music playback will be paused when take
off the headphones from wearing.
• Then, the music playback will be resumed when
you put on the headphones.
5 Reset the
headphones
1. On your Bluetooth device, go to the
Bluetooth menu and remove Fidelio L4 SE
from the device list.
2. Turn off the Bluetooth function of your
Bluetooth device.
3. Turn on your headphones.
4. Press and hold and ANC button for 3
seconds at the same time.
5. Follow steps in “Use your headphones-
connect the headphones to your
Bluetooth device.”
6. Pair the headphones with your Bluetooth
device, select Fidelio L4 SE.
If you encounter any pairing or connection issue,
you can follow the following procedure to reset
your headphones to factory default settings.
10 EN
6 Technical data
Remove the integrated
battery
If there is no collection/recycling system for
electronic products in your country, you can
protect the environment by removing and
recycling the battery before disposing of the
headphones.
• Music play time:
(ANC off) 50 hours
(ANC on) 40 hours
• Charging time: 2 hours
• Rechargeable lithium ion battery: 800
mAh
• Bluetooth version: 6.0
• Compatible Bluetooth pro�les:
- HFP
(Hands-Free Pro�le)
- A2DP
(Advanced Audio Distribution Pro�le)
- AVRCP
(Audio Video Remote Control Pro�le)
• Supported audio codecs: SBC, AAC, LDAC
• Frequency range: 2.4-2.4835 GHz
• Transmitter power: < 10 dBm
• Operating range: Up to 10 meters
(33 feet)
• Auto power off
• Volume control
• Type of controls: Touch
• USB-C port for charging
• Multi-point connection
• Fast charging: 15 mins charging gives 14
hrs playing
Note
• Speci�cations are subject to change without
notice.
• Battery life of playtime is approximate and may
vary depending on application condition.
7 Notice
Hereby, TP Vision Europe B.V. declares that the
product is in compliance with the essential
requirements and other relevant provisions of RED
Directive 2014/53/EU and UK Radio Equipment
Regulations SI 2017 No 1206. You can �nd the
Declaration of Conformity on
www.philips.com/support.
Declaration of conformity
Disposal of your old
product and battery
Your product is designed and
manufactured with high quality materials
and components which can be recycled
and reused.
This symbol on a product means that the
product is covered by European Directive
2012/19/EU.
This symbol means that the product
contains batteries covered by European
Regulation (EU) 2023/1542 which cannot
be disposed of with normal household
waste. Inform yourself about the local
separate collection system for electrical
and electronic products and batteries.
Follow local rules and never dispose of the
product and batteries with normal
household waste. Correct disposal of old
products and batteries helps prevent
negative consequences for the
environment and human health.
11 EN
Environmental information
All unnecessary packaging has been omitted.
Your system consists of materials which can be
recycled and reused if disassembled by a
specialized company. Please observe the local
regulations regarding the disposal of packaging
materials, exhausted batteries and old
equipment.
Compliance with EMF
This product complies with all
applicable standards and regulations regarding
exposure to electromagnetic �elds.
Notice of compliance
The device complies with the FCC rules, Part 15.
Operation is subject to the following two
conditions:
FCC rules
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
canradiate radio frequency energy and, if not
installed and used in accordance with the
instruction manual, 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 antenna
• Increase the separation between equipment
and receiver
1. This device may not cause harmful
interference, and
2. This device must accept any interference
received, including interference that may
cause undesired operation.
• 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
FCC Radiation Exposure Statement:
The SAR limit of USA (FCC) is 1.6 W/kg averaged
over one gram of tissue. This device has been
tested to complied FCC Speci�c Absorption Rate
(SAR)compliance. The highest reported SAR level
for usage near the head (0mm) is 0.058 W/kg.
This equipment complies with Canada radiation
exposure limits set forth for uncontrolled
environments.
This transmitter must not be co-located or
operating in conjunction with any other antenna
or transmitter. This equipment should be installed
and operated with a minimum distance of 0mm
between the radiator and your body.
12 EN
Canada:
This device contains licence-exempt
transmitter(s)/receiver(s) that comply with
Innovation, Science and Economic Development
Canada’s license-exempt RSS(s). Operation is
subject to the following two conditions: (1) This
device may not cause interference. (2) This
device must accept any interference, including
interference that may cause undesired operation
of the device.
Avis de conformité
Cet appareil satisfait aux règlements de la FCC
partie 15 du Code of Federal Regulations. Son
fonctionnement est assujetti aux deux conditions
suivantes :
1. Cet appareil ne doit pas causer
d’interférence préjudiciable et
2. l’appareil doit accepter toute interférence
reçue, y compris les interférences qui
peuvent causer un fonctionnement non
désiré.
Caution:
The user is cautioned that changes or
modifications not expressly approved by the party
responsible for compliance could void the user's
authority to operate the equipment.
Règlement de la FCC
Cet équipement a été testé et jugé compatible
avec les limites s’appliquant aux appareils
numériques de la classe B, conformément à
l’article 15 du règlement de la FCC. Ces limites ont
été définies pour fournir une protection raisonnable
contre les interférences nuisibles dans le cadre
d’une installation résidentielle. Cet équipement
génère, utilise et peut émettre de l’énergie
radiofréquence et, s’il n’est pas installé ni utilisé
conformément aux instructions, peut causer des
interférences gênantes pour les communications
radio.
Rien ne garantit toutefois que des interférences ne
surviendront pas dans une installation particulière.
Si cet équipement cause des interférences
nuisibles pour la réception de la radio ou de la
télévision, ce qui peut être déterminé en mettant
l’équipement hors tension puis sous tension,
l’utilisateur devra essayer de corriger ces
interférences en effectuant une ou plusieurs des
opérations suivantes :
• Déplacez l’antenne de réception.
• Augmentez la distance entre l’équipement et le
récepteur.
• Branchez l’équipement à une prise d’un circuit
autre que celui sur lequel le récepteur est
branché.
• Consultez le détaillant ou un technicien de
radiotélévision expérimenté.
Canada :
Le présent appareil est conforme aux CNR
d’Industrie Canada applicables aux appareils
radio exempts de licence. L’exploitation est
autorisée aux deux conditions suivantes : (1)
l’appareil ne doit pas produire de brouillage, et
(2) l’utilisateur de l’appareil doit accepter tout
brouillage radioélectrique subi, même si le
brouillage est susceptible d’en compromettre le
fonctionnement.
CAN ICES-(B)/NMB-(B)
Déclaration d’IC sur l’exposition aux radiations:
Cet équipement est conforme aux limites
d’exposition aux radiations dé�nies par le
Canada pour des environnements non contrôlés.
Cet émetteur ne doit pas être installé au même
endroit ni utilisé avec une autre antenne ou un
autre émetteur.
Cet équipement devrait être installé et actionné
avec une distance minimum de 0mm entre le
radiateur et votre corps.
13 EN
8 Frequently
asked
questions
My Bluetooth headphones do not turn on.
The battery level is low. Charge the headphones.
I cannot pair my Bluetooth headphones with my
Bluetooth device.
The Bluetooth is disabled. Enable the Bluetooth
feature on your Bluetooth device and turn on
the Bluetooth device before you turn on the
headphones.
How to reset pairing.
While the device is powered on, press and hold
the MFB for 5 secondsuntil the blue and white
LED alternately �ashes. This triggers re-pairing
mode in two cases:
1) Switching devices in multipoint connection
mode;
2) Connecting to a new source device.
I hear but cannot control music on my Bluetooth
device (e.g. play/pause/skip forward/backward).
Make sure the Bluetooth audio source supports
AVRCP (see ‘Technical data’ on page 10).
The volume level of the headphones is too low.
Some Bluetooth devices cannot link the volume
level with the headphones through volume sync.
In this case, you have to adjust the volume on
your Bluetooth device independently to achieve
an appropriate volume level.
The Bluetooth device cannot �nd the
headphones.
• The headphones may be connected to a
previously paired device. Turn off the
connected device or move it out of range.
• Pairing may have been reset or the
headphones have been previously paired
with another device. Pair the headphones
with the Bluetooth device again as described
in the user manual. (see ‘Pair the
headphones with another Bluetooth device’
on page 5).
My Bluetooth headphones are connected to a
Bluetooth stereo enabled mobile phone, but
music only plays on the mobile phone speaker.
Refer to the user manual of your mobile phone.
Select to listen to music through the headphones.
The audio quality is poor and crackling noise can
be heard.
• The Bluetooth device is out of range. Reduce
the distance between your headphones and
Bluetooth device, or remove obstacles
between them.
• Charge your headphones.
Clean your headphones regularly.
• Use a clean, damp cloth to clean your
headphones - especially the sound conduits
and the microphone holes - regularly and
avoid buildup of substances such as sweat or
earwax.
• If any sweat or water droplets are left in the
sound conduits, air holes or microphone
holes, the sound level will temporarily drop or
cut out entirely. This is not a malfunction. Use
a soft, damp cloth to dry the headphones
thoroughly. Alternatively, for in-ear
headphones remove the earbud tips, turn the
sound conduits downward and gently tap the
headphones about �ve times on a dry cloth
or similar to remove any water collected
inside.
• Be sure the headphones are completely dry
before charging and using. Avoid using
disposable alcohol pads or other substances
for cleaning.
Charge your headphones regularly.
If the headset is not used for a long time, the
rechargeable battery will begin to lose its charge.
To avoid this loss, please fully charge the battery
at least once every three months.
14 EN
9 Trademarks
The Bluetooth® word mark and logos are
registered trademarks owned by
Bluetooth SIG, Inc. and any use of such
marks by MMD Hong Kong Holding
Limited is under license. Other
trademarks and trade names are those of
their respective owners.
Bluetooth
LDAC- LDAC and LDAC logo are trademarks of
Sony Corporation.
LDAC
The product with this logo is conformed to
”Hi-Res Audio Logo” standard and ”Hi-Res Audio
Wireless Logo” standard de�ned by Japan Audio
Society. The Logo is used under license from
Japan Audio Society.
Hi-Res
UM_Fidelio L4SE_00_EN_V1.0
MMD Hong Kong Holding Limited. All rights reserved. Speci�cations are subject to change without notice.
Philips and the Philips Shield Emblem are registered trademarks of Koninklijke Philips N.V. and are used
under license. This product has been manufactured by and is sold under the responsibility of MMD Hong
Kong Holding Limited or one of its affiliates, and MMD Hong Kong Holding Limited is the warrantor in
relation to this product. All other company and product names may be trademarks of its respective
companies with which they are associated.
