Sennheiser MOMENTUM True Wireless, M3IETW R, M3IETW, M3IETW L, M3IETW C Instruction Manual
MOMENTUM True Wireless
True wireless stereo earphones
M3IETW (M3IETW L, M3IETW R, M3IETW C)
Instruction manual
Use the search function, the navigation (left) or the following links:
Start
“Product overview”
“Getting started”
“Using the earphones”
“FAQ/If a problem occurs ...”
“Specifications”
Sennheiser electronic GmbH & Co. KG
Am Labor 1
30900 Wedemark
Germany
www.sennheiser.com
Version: 08/18 A01
Important safety instructions
2 | MOMENTUM True Wireless
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 an obviously defective product.
▷ 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.
▷ Do not insert the earphones too deep into your ears and never
insert them without ear adapters. Always remove the earphones
slowly and carefully from your ears.
▷ The product generates stronger permanent magnetic
fields that could cause interference with cardiac pacemakers, implanted defibrillators (ICDs) and other
i
mplants. Always maintain a distance of at least 3.94"/10 cm between the product component containing the magnet (earbuds
and ch
arging case) and the cardiac pacemaker, implanted defi-
brillator, or other implant.
▷ Keep the product, accessories and packaging parts out of reach
of children and pets to prevent accidents. Swallowing and choking 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.)
t
o avoid corrosion or deformation.
▷ Use only attachments/accessories/spare parts supplied or
recommended by Sennheiser.
▷ Clean the product only with a soft, dry cloth.
Safety instructions for Lithium r
echargeable batteries
WARNING
If abused or misused, the rechargeable batteries may leak.
In extreme cases, they may even present a risk of
•explosion,
• fire development,
• heat generation,
•smoke or gas development.
Only use rechargeable batteries and chargers
recommended by Sennheiser.
Charge products with built-in rechargeable batteries at
ambient temperatures between 10 and 40°C/50 and
104°F.
Do not heat above 60 °C/140°F, e.g. do not expose to
sunlight or throw into fire.
When not using the product for extended periods of
time, charge its built-in rechargeable battery regularly
(about every 3 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
MOMENTUM True Wireless | 3
Notes on data collection and processing and on firmware updates
This product stores individual settings such as the volume, the
sound
profiles 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 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 automatically transferred to and processed by Sennheiser servers in order to provide and transfer suitable firmware
u
pdates: MAC address, Bluetooth Low Energy UUID, Bluetooth name
of the product, 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
c
onnect to the Internet.
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 an
d 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 improper use or misuse 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.
Package contents
4 | MOMENTUM True Wireless
Package contents
Earbud R for right ear (M3IETW R) and
earbud L for left ear (M3IETW L)
Charging case with built-in rechargeable battery for
the earbuds (M3IETW C)
USB charging cable with USB-C and USB-A
connector, approx. 0.25 m
Silicone ear adapters (size XS, S, M (pre-mounted to
the earphones) and L
Quick guide
Safety guide
Online you can find:
• this detailed instruction manual and ad
ditional information
(www.sennheiser.com/download)
• the Sennheiser Smart Control app for configuring the headphones and for additional functions
A list of accessories can be found on the MOMENTUM True
Wireless product page at www.sennheiser.com. Contact your
local Sennheiser partner: www.se
nnheiser.com > “Service &
Support”.
(www.sennheiser.com/device-control-app)
Product overview
MOMENTUM True Wireless | 5
Product overview
Charging case
M3IETW C
1 2 394 5
7
7
8
6
LED
displays the charging process/charge status of the
re
chargeable battery of the charge case or of the earbuds
(when inserted into the charging case)
Input for USB-C connector
for charging the rechargeable batteries
LED button
activates the LED display for 5 seconds
Built-in rechargeable battery for charging the earbuds on
the go
Type plate
Charging compartment for the left earbud L
Magnetic holders
Charging compartment for the right earbud R
Charging contacts
Product overview
6 | MOMENTUM True Wireless
Earbuds
M3IETW L and M3IETW R
R
L
CC
A
M3IETW L M3IETW R
A
DDE
F
00
F
F
G
B
D
DE
H
H
Touch control panel
Changeable silicone ear adapters
Left earbud L (slave earbud, receives signals from the right
earbud)
Status LED
Magnetic holders
Charging contacts
Microphones for the perception of ambient noise
(“Transparent Hearing”) and for phone calls
Right earbud R (master earbud, controls the Bluetooth
connection to the smartphone and to the left earbud)
Built-in rechargeable battery
Overview of the LED indications of the
charging case
When a USB cable is connected, the LED of the charging case permanently displays the charging process:
LED
Charging case WITH
earbuds inserted
Charging case
WITHOUT earbuds
inserted
pulses
yellow
... earbuds and charging case are being
ch
arged
... charging case is
being charged
lights up
green
... earbuds and charging case are fully
charged
... charging case is
fully charged
flashes
red
... a charging error/
battery er
ror has
been detected in at
least one earbud
(> 26)
... a charging error/
b
attery error has
been detected in the
charging case (> 26)
2
Press
1x
Product overview
MOMENTUM True Wireless | 7
If you press the LED button and no USB cable is connected, the LED
of the charging case displays the battery charge status or the charging process of the earbuds for 5 seconds:
LED
Charging case WITH
earbuds inserted
Charging case
WITHOUT earbuds
inserted
lights up
green
... earbuds are fully
charged
... charging case is
charged between
50-100 %
pulses
yellow
... earbuds are being
charged via the
rechargeable battery of the charging
case
–
lights up
yellow
... rechargeable battery of the charging
ca
se is empty and
the earbuds are not
fully charged
... charging case is
cha
rged less than
50 %
lights up
red
... rechargeable batteries of the earbuds
and the charging
case are empty
... rechargeable battery of the charging
case is empty
flashes
red
... a charging error/
battery er
ror has
been detected in at
least one earbud
(> 26)
... a charging error/
b
attery error has
been detected in the
charging case (> 26)
If the LED does not light up, the rechargeable battery is deep
discharged. Charge the rechargeable battery until the LED
lights up again (>
12).
Product overview
8 | MOMENTUM True Wireless
Overview of the LED indications of the
earbuds
LED Meaning; the earbud ...
flashes red-blue
for approx. 1 min
... is in Bluetooth pairing mode
3x
flashes blue 3
times
... Bluetooth pairing successful
3x
flashes red 3
times
... Bluetooth pairing failed
lights up blue
... is connected to a device via Bluetooth
(master earbud (R) is connected
to
the smartphone, slave earbud (L) is
connected to the master earbud (R))
lights up red
... is not connected to a device via
Bluetooth or
the connection has
been lost
(master earbud (R) is not connected
to a smartphone, slave earbud (L) is
not connected to the master earbud
(R))
flashes red
quickly
... rechargeable battery is almost
empty
flashes red
slowly
... system error. Perform a restart (>
28).
When you insert the earbuds into your ears, the LEDs of the
earbuds automatically go off after approx. 5 seconds.
Product overview
MOMENTUM True Wireless | 9
Notes on voice prompts
The earphones output voice prompts for the following functions.
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 exceptions (e.g. rechargeable battery is empty).
Voice prompt Meaning/earbuds...
“Power on”
... are switched on
“Power off” ... switch off
“Connected”
... connected via Bluetooth
“No connection” ... not connected via Bluetooth
“Pairing”
... is in Bluetooth pairing mode
“Pairing cancelled” ... Bluetooth pairing cancelled
“Pairing successful”
... Bluetooth pairing successful
“Pairing failed” ... Bluetooth pairing failed
“Recharge headset”
... rechargeable battery almost
empty – recharge the battery
“Call rejected” ... incoming call rejected
“Call ended”
... call ended
“Volume min” ... volume set to minimum
“Volume max” ... volume set to maximum
Getting started
10 | MOMENTUM True Wireless
Getting started
1. Waking up the earphones and the charging
case and charging the rechargeable batteries
Upon delivery, the rechargeable batteries of the earphones and the
ch arg ing case are in slee p mo de and have to be woken up b y co nnecting them to a power source once.
▷ Insert the earphones into the charging case.
▷ Connect the USB-C cable to the charging case and to a USB
power source (> 12).
The earphones and the charging case are woken up and the
re
chargeable batteries are being charged. The earphones are
now ready for use.
2. Installing the Smart Control app on your
smartphone
ON
The Sennheiser Smart Control app allows you to use all functions
and settings of the earphones and to e.g. adjust the sound to your
liking using the equalizer (> 15).
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