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“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
MOMENTUM Wireless M3AEBTXL | 1
Important safety instructions
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 acoustic warning signals.
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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.
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2 | MOMENTUM Wireless M3AEBTXL
Important safety instructions
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.
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.
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 operating 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 providing 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 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 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.
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MOMENTUM Wireless M3AEBTXL | 3
Important safety instructions
Intended use/Liability
These headphones have been designed as an accessory for Bluetooth compliant devices. They are intended for wireless audio communication such as music playback and phone calls via Bluetooth
wireless technology.
It is considered improper use when the product is used for any application 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 consistent with the USB specifications.
Sennheiser is not liable for damages resulting from the loss of connection due to flat or overaged rechargeable batteries or exceeding
the Bluetooth transmission range.
Before putting into operation, please observe the respective country-specific regulations.
4 | MOMENTUM Wireless M3AEBTXL
Package contents
MOMENTUM Wireless M3AEBTXL around-ear headphones
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
Package contents
Carry case
Quick guide
Safety guide
Online you can find:
• this detailed instruction manual and additional information
(
www.sennheiser.com/download)
• the Sennheiser Smart Control app for configuring the headphones and for additional functions (www.sennheiser.com/
smartcontrol)
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”.
MOMENTUM Wireless M3AEBTXL | 5
Product overview
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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
6 | MOMENTUM Wireless M3AEBTXL
Product overview
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/Bluetooth 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
Overview of the LED display
LEDMeaning; the headphones...
lights up green
for approx.
2
seconds
lights up blue
for approx. 2
seconds
lights up red
for approx.
2
seconds
... switch on
... are connected to a device via Bluetooth
... are not connected to a device via
Bluetooth or the connection has been
lost
flashes redblue for
approx. 5 min
... are in Bluetooth pairing mode
-
utes
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).
MOMENTUM Wireless M3AEBTXL | 7
Product overview
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).
Voice promptMeaning/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.
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Notes on vibration prompts
The headphones output vibration prompts for the following functions.
EventComment
Incoming callHeadphones 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).
8 | MOMENTUM Wireless M3AEBTXL
Getting started
USB-CUSB-C
“Sennheiser Smart Control”
5s
Hold
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
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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 headband can be adjusted to properly fit your head (> 19).
MOMENTUM Wireless M3AEBTXL | 9
Using the headphones
3 HRS
Pulsing
USB-A
USB-C
USB-C
USB-C
1
2
USB-C USB Micro-B
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 supplied 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.
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Charging the headphones' rechargeable
battery
10 | MOMENTUM Wireless M3AEBTXL
1. Connect the USB-C connector of the USB cable to the USB-C
socket of the headphones.
Using the headphones
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 displays the charge status:
LEDMeaning
pulses redRechargeable battery is being charged
(charge level is very low)
pulses yellowRechargeable battery is being charged
lights up
green
flashes redA charging error/battery error has
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.
Rechargeable battery is fully charged
occurred (>
32)
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 settings for the pairing process.
If operation differs from the steps mentioned, also refer to the
instruction manual of the Bluetooth device you are using.
When you switch on the headphones for the first time, they
automatically switch to pairing mode.
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 immediately 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.
MOMENTUM Wireless M3AEBTXL | 11
Using the headphones
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)
12 | MOMENTUM Wireless M3AEBTXL
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