Sennheiser MOMENTUM Wireless User manual

MOMENTUM Wireless M3AEBTXL | 1
MOMENTUM Wireless
Around-ear headphones
M3AEBTXL
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: 01/20 A02

Important safety instructions
2 | MOMENTUM Wireless M3AEBTXL
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).
Especially the product’s active noise cancellation can make ambi-
ent noise inaudible or drastically change the perception of acous-
tic warning signals.
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 °C to 40 °C/32 °F 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 non-leather parts of the product only with a soft, dry
cloth
Caring for leather parts
▷Gently wipe leather parts periodically with a clean, soft cloth
dampened with water.
▷Do not use leather polish, detergents or harsh soaps to clean
leather parts.
▷Do not store the headphones in a damp or humid environment.

Important safety instructions
MOMENTUM Wireless M3AEBTXL | 3
Safety instructions for the lithium polymer rechargeable battery
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.
This product collects usage data such as switch-on cycles and oper-
ating times (e.g. music playback, ANC programs, EQ settings), which
is transferred to Sennheiser or companies commissioned by Senn-
heiser via the “Sennheiser Smart Control” app in encrypted and
anonymous form, and stored and processed there. The data is pro-
cessed to determine statistical parameters for the purpose of pro-
viding and maintaining functions and for product improvements. At
no time can reference be made to a specific person. If this data is not
to be transferred and processed, you can object to its use in the “Pri-
vacy” section of the app menu.
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.
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,
•smokeorgasdevelopment.
Only use rechargeable batteries and chargers
recommended by Sennheiser.
Only charge the product / rechargeable batteries at
ambient temperatures between 0 °C to 40 °C/32 °F to
104 °F.
Do not heat the product / rechargeable batteries above
60 °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 | MOMENTUM Wireless M3AEBTXL
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
MOMENTUM Wireless M3AEBTXL | 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/
smartcontrol)
MOMENTUM Wireless M3AEBTXL around-ear head-
phones
USB cable with USB-C connectors,
length approx. 1.2 m
USB adapter
USB-C to USB-A connector
Analog audio cable with 3.5 mm jack plug,
length approx. 1.4 m
Carry case
Quick guide
Safety guide
A list of accessories can be found on the MOMENTUM Wireless
product page at www.sennheiser.com.
Contact your local Sennheiser partner: www.sennheiser.com >
“Service & Support”.

Product overview
6 | MOMENTUM Wireless M3AEBTXL
Product overview
Sheepskin headband
LED
Active noise cancellation (ANC) switch
On/off, Transparent Hearing mode
NFC antenna
Volume + button (volume up)
Multi-function button for music and call functions
Volume - button (volume down)
External microphones for active noise cancellation ANC
OFF ON
1
2
3
4
5
6
7
8
8
9
0A
B
DD
D
C
E
LR

Product overview
MOMENTUM Wireless M3AEBTXL | 7
Overview of the LED display
Voice assistant button;
pressing for 5 seconds activates the Bluetooth pairing
mode
Input for USB-C;
for charging and music playback/data connection
Input for analog audio cable;
when a cable is connected, flight mode is activated/Blue-
tooth is deactivated
Ear cups (steplessly adjustable) with internal microphones
for active noise cancellation ANC
Sheepskin ear pads
Ear cup joint with on/off function for the headphones
Microphones for phone calls
LED Meaning; the headphones...
lights up green
for approx.
2seconds
... switch on
lights up blue
for approx. 2
seconds
... are connected to a device via Blue-
tooth
lights up red
for approx.
2seconds
... are not connected to a device via
Bluetooth or the connection has been
lost
flashes red-
blue for
approx. 5 min-
utes
... are in Bluetooth pairing mode
flashes green ... indicate an incoming call
flashes red
quickly ... have a very low battery level
flashes red 3x ... switch off
pulses red ... are being charged (charge level is
very low)
pulses yellow ... are being charged
lights up green ... are fully charged
flashes red A charging error/battery error has
occurred (> 32)
If the LED does not light up immediately during charging, clean
the charging contacts and charge the headphones until the
LED lights up again (> 10).

Product overview
8 | MOMENTUM Wireless M3AEBTXL
Notes on voice prompts
The headphones output voice prompts for various functions (see
examples below). Using the Smart Control app, you can change the
language of the voice prompts, choose between voice prompts and
beep sounds, or deactivate the status messages with a few excep-
tions (e.g. rechargeable battery is empty).
Notes on vibration prompts
The headphones output vibration prompts for the following func-
tions.
Voice prompt Meaning/headphones
“Power on” switched on
“Power off” switched off
“Device (1) (2) connected” are connected to device 1 or 2
“No connection” not connected via Bluetooth
“Pairing” are in Bluetooth pairing mode
“Pairing successful” Bluetooth pairing successful
“No device found” cannot connect to a paired device
“Volume min” volume set to minimum
“Volume max” volume set to maximum
“Call rejected” incoming call rejected
“Call ended” call ended
“Mute on” Microphone is muted, active call is
put on hold
“Mute off” Microphone is reactivated
“More than xx % battery left” Rechargeable battery has the
stated charge level
“Recharge headset” Rechargeable battery is empty.
Recharge the headphones.
Event Comment
Incoming call Headphones vibrate only when not
put on.
Locating the headphones
using the TILE app
Using the TILE app you can make
the registered MOMENTUM 3
vibrate to locate it when it is nearby
(> 28).

Getting started
MOMENTUM Wireless M3AEBTXL | 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 (> 10).
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 (> 11).
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 (> 19).
USB-CUSB-C
“Sennheiser Smart Control”
5s
Hold

Using the headphones
10 | MOMENTUM Wireless M3AEBTXL
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. 3 hours. The headphones provide 1.5
hours of playback time with a charging time of approx. 10 minutes.
Before using the headphones for the first time, charge the recharge-
able battery for a complete charging cycle without interruption.
When the headphones are being charged, the LED lights up (> 7).
When the battery charge drops to a critical level, a voice prompt asks
you to recharge the headphones (“Recharge headset”).
Sennheiser recommends to charge the headphones using the sup-
plied USB-C cable and a compatible standard USB-C power supply
unit.
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 USB cable to the USB-C
socket of the headphones.
3 HRS
Pulsing
USB-A
USB-C
USB-C
USB-C
1
2
USB-C USB Micro-B

Using the headphones
MOMENTUM Wireless M3AEBTXL | 11
2. Connect the other USB-C 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:
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 your Bluetooth device supports auto pairing via NFC (Near Field
Communication), the connection is automatically established.
If your Bluetooth device does not support NFC, use the device set-
tings for the pairing process.
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.
LED Meaning
pulses red Rechargeable battery is being charged
(charge level is very low)
pulses yellow Rechargeable battery is being charged
lights up
green
Rechargeable battery is fully charged
flashes red A charging error/battery error has
occurred (> 32)
If you do not have a USB power source with a USB-C socket,
use the USB adapter (supplied) for connection to a USB-A
socket.
When you switch on the headphones for the first time, they
automatically switch to pairing mode.

Using the headphones
12 | MOMENTUM Wireless M3AEBTXL
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.
Paired and connected Bluetooth device
Paired Bluetooth device (currently not connected)

Using the headphones
MOMENTUM Wireless M3AEBTXL | 13
Pairing the headphones with a Bluetooth
device using NFC
1. Activate NFC on your Bluetooth device.
2. Switch the headphones on (> 16).
3. Place your Bluetooth device close (less than 3 cm) to the NFC
antenna in the right ear cup of the headphones.
You hear the voice prompt “Pairing” and the LED flashes blue and
red.
4. Click “Yes” if a confirmation dialog for Bluetooth pairing appears
on the screen of your Bluetooth device (this step may vary
depending on your Bluetooth device).
If pairing was successful, you hear the voice prompts “Pairing
successful” and “Device (1) connected”. The LED lights up blue for
2 seconds.
< 3 cm
Pairing
ON
ON
1 2
3 4
ON
MOMENTUM 3
Connected
2s
“Pairing“ “Device (1)
connected“
“Pairing
successful“
ONOFF
Click

Using the headphones
14 | MOMENTUM Wireless M3AEBTXL
Pairing the headphones with a Bluetooth
device
1. Switch the headphones on (> 16) and place them close to the
Bluetooth device (max. 20 cm).
2. Press and hold the voice assistant button for 5 seconds until you
hear the voice prompt “Pairing”.
The LED flashes blue and red. The headphones are in pairing
mode.
3. Activate Bluetooth on your Bluetooth device.
4. Via the menu of your Bluetooth device, start the search for new
Bluetooth devices.
All active Bluetooth devices in the proximity of your Bluetooth
device are displayed.
5. From the list of found Bluetooth devices, select “MOMENTUM 3”.
If necessary, enter the default pin code “0000”.
If pairing was successful, you hear the voice prompts “Pairing
successful” and “Device (1) connected”. The LED lights up blue for
2 seconds.
If no connection is established within 5 minutes, pairing mode
is terminated and the headphones switch to standby mode. If
necessary, repeat the steps described above.
Pairing
1
2 3 4 5
Connected
2s
“Pairing“
“Device (1)
connected“
“Pairing
successful“
< 20 cm
ON
OFF
Click
*** MOMENTUM 3
*** MOMENTUM 3
Keyword: 0000
Menu
Bluetooth on
Bluetooth off
Menu
Add Device
5s
Hold

Using the headphones
MOMENTUM Wireless M3AEBTXL | 15
Disconnecting the headphones from a
Bluetooth device
▷Via the menu of your Bluetooth device, disconnect the connection to
the headphones.
The headphones are disconnected from the Bluetooth device.
You hear the voice prompt “Device (1) disconnected”. The head-
phones switch to standby mode.
Installing the Smart Control app
To make full use of all the settings and functions of the headphones,
you need to have the free Sennheiser Smart Control app installed on
your smartphone.
Download the app from the App Store or Google Play and install it on
your smartphone. Alternatively, you can use your smartphone to
scan the following QR code or to call up the following Internet site:
www.sennheiser.com/smartcontrol
▷Connect your smartphone to the headphones via Bluetooth (> 11).
▷Start the Smart Control app.
The Smart Control app recognizes the headphones and activates
all available settings and functions.
To delete the Bluetooth pairing list of the headphones, > 33.
For further functions of the headphones, you require the apps
of the respective manufacturers:
• TILE app (> 28)
• Amazon Alexa app (> 26)

Using the headphones
16 | MOMENTUM Wireless M3AEBTXL
Switching the headphones on
▷Unfold the two ear cups (right and left).
The joints click into place. The headphones switch on. You hear
the voice prompt “Power on” and the LED lights up green for
2seconds.
If a paired Bluetooth device is within the transmission range, you
hear the voice prompt “Device (1) connected”. The LED lights up
blue for 2 seconds.
WARNING
Danger of hearing damage due to high volume levels!
Listening at high volume levels can lead to permanent
hearing defects.
▷Before putting the headphones on, adjust the volume
to a low level (> 20).
▷Do not continuously expose yourself to high volume
levels.
WARNING
Risk of getting caught when unfolding the ear cups!
When the ear cups are unfolded, you may get caught in
the joints and injure yourself.
▷When unfolding the ear cups, keep sufficient distance
to the joints so that no skin is caught in the joints.
Make sure that Bluetooth is already activated on your Blue-
tooth device when switching on the headphones.
If Bluetooth is activated and the headphones cannot find a
paired Bluetooth device within a few minutes, you hear the
voice prompt “No device found”. The LED lights up red for 2
seconds. The headphones switch to standby mode.
Connected
No connection
“Device (1)
connected“
“No device
found“
“Power on“
OFF
Click
ON
Power on
2s 2s
2s

Using the headphones
MOMENTUM Wireless M3AEBTXL | 17
Unfolding the ear cups without switching
the headphones on
▷Press the multi-function button while unfolding the ear cups and
hold the button for at least 4 seconds.
The headphones remain switched off. You hear the voice prompts
“Power off”. The LED lights up red for 2 seconds.
To switch the headphones on again:
▷Fold both ear cups inward and unfold them again.
The headphones switch on normally (> 16).
Switching the headphones on without
Bluetooth wireless connection (flight
mode)
▷Press the voice assistant button while unfolding the ear cups and
hold the button for at least 4 seconds.
The headphones switch on without Bluetooth wireless connec-
tion. You hear the voice prompts “Power on” and “No connection”.
The LED lights up green for 2 seconds and then red for 2 seconds.
“Power off“
Click
OFF
2s
4s
Hold
If you connect the analog audio cable to the headphones, the
flight mode is also activated (Bluetooth wireless connection is
off) (> 28).
OFF
“Power on“
“No connection“
Click
ON
2s 2s
4s
Hold

Using the headphones
18 | MOMENTUM Wireless M3AEBTXL
Switching the headphones off
▷Fold the left ear cup and then the right ear cup inward over a
slight resistance of the joint.
You hear the voice prompt “Power off” and the LED display
flashes red 3x. The headphones switch off.
When you remove the headphones and place them on your
shoulders, the headphones switch to standby mode to save
power. When you put the headphones on again, the standby
mode is deactivated.
When the headphones are switched off, keep a minimum dis-
tance of 10 cm between the headphones and strong magnets,
as the headphones may switch on unintentionally.
“Power off“
1
2
OFF
3x

Using the headphones
MOMENTUM Wireless M3AEBTXL | 19
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.
▷Wear the headphones so that the headband runs over the top of
your head. The markings Rfor the right side and Lfor the left side
can be found in the ear cups.
▷Move the ear cups up or down the headband slider until:
– your ears are comfortably covered by the ear pads,
– you feel even, gentle pressure around your ears,
– a snug fit of the headband on the head is ensured.
For optimal sound quality and active noise cancellation ANC, the
ear pads must completely surround your ears.
Retrieving information on the battery
charge status
When the headphones are connected to your Bluetooth device, the
battery charge status can be displayed on the screen of your smart-
phone (depending on the device and operating system used).
The Smart Control app also displays the battery charge status.
On the headphones, you can check the battery charge status via the
voice prompts (not possible during a call):
▷Press and hold the multi-function button for 2 seconds.
Voice prompt Meaning
“Recharge headset” The rechargeable battery is empty.
Recharge the rechargeable battery (>
10).
In addition, the LED flashes red.
“More than xx % battery
left”
The remaining battery charge is
displayed as a percentage.
"recharge
headset"
„More than xx %
battery left“
2s
Hold

Using the headphones
20 | MOMENTUM Wireless M3AEBTXL
Adjusting the volume
You can adjust the volume for music, voice prompts, and phone calls.
▷If you are playing music or are on a call: Press the volume +or -
button to increase or reduce the volume.
When the minimum or maximum volume is reached, you hear the
voice prompt “Volume max” or “Volume min”.
Information on active noise cancellation
ANC
Due to its closed design, the headphones offer effective passive iso-
lation from ambient noise.
In addition, the headphones have an active noise cancellation (ANC)
function, which allows you to reduce ambient noise to a minimum.
Even when ANC is activated, your headphones' sound quality is
always at its best.
You can activate or deactivate ANC when the headphones and your
audio source are connected via Bluetooth, the USB cable, or the
audio cable (provided that the battery is sufficiently charged).
If you want to create a quiet space in a noisy environment, you can
simply use the headphones – without cable and disconnected from
any Bluetooth device – with ANC activated (> 17).
The Smart Control app allows you to select different ANC modes that
offer the optimal settings depending on the application/situation.
For example, low-frequency noise can be suppressed, wind noise
can be minimized or a possible feeling of pressure on the ears can be
avoided.
WARNING
Danger of hearing damage due to high volume levels!
Listening at high volume levels can lead to permanent
hearing defects. Toggling between the audio sources
may cause enormous volume jumps that can perma-
nently damage your hearing.
▷Before putting the headphones on and before tog-
gling between audio sources, adjust the volume to a
low level.
▷Do not continuously expose yourself to high volume
levels.
You can also adjust the volume using the connected Bluetooth
device.
„Volume max“
„Volume min“