Sennheiser M3IETW2 C, M3IETW2 R, M3IETW2 L User Manual

MOMENTUM True Wireless 2

True wireless stereo earphones

M3IETW2, M3IETW2 R, M3IETW2 L, M3IETW2 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: 04/20 A01

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.

▷ 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 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 (earbuds and charging case) 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). Especially the product’s active noise cancellation can make ambient 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 earbuds.

▷ Use only attachments/accessories/spare parts supplied or rec-

ommended by Sennheiser.

▷ Clean the product only with a soft, dry cloth.

Important safety instructions

Safety instructions for Lithium rechargeable 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.

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.

Notes on the ingress protection rating of the earphones

The earphones feature an IPX4 ingress protection rating which means they are protected from the ingress of water (protection class according to International Protection Marking (IP code), IEC standard 60529, tested under laboratory conditions).

The earbuds can be used in the rain, for example. However, they are not suitable for immersion in water or for wearing in the shower. In case of permanent moisture/wetness, the ingress protection can be reduced and the product can be damaged.

Do not charge wet earbuds. Completely dry wet earbuds with a dry cloth before charging them.

The charging case is not splash waterproof. Always keep the charging case dry.

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 connection data of paired devices. This data is required for the operation of the product and is not trans ferred to Sennheiser or companies commissioned by Sennheiser and is not processed.

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Important safety instructions

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.

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.

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Package contents

Earbud R for right ear (M3IETW2 R) and earbud L for left ear (M3IETW2 L)

Charging case (M3IETW2 C) with built-in rechargeable battery for the earbuds

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 earbuds) and L)

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 True Wireless 2 product page at www.sennheiser.com. Contact your local Sennheiser partner: www.sennheiser.com > “Service & Support”.

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Product overview

1 2 394 5

Product overview

Charging case

M3IETW2 C

LED displays the charging process/charge status of the

rechargeable battery of the charging 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

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Product overview

M3IETW2 L M3IETW2 R

EEF

Earphones

M3IETW2 R and M3IETW2 L

Touch control panel

Changeable silicone ear adapters

Left earbud L (slave earbud, receives signals from the right earbud)

Status LED

Infra-red carrying senor

Magnetic holders

Charging contacts

Microphones for the active noise cancellation ANC, 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

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Product overview

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

pulses yellow

lights up green

flashes red

Charging case WITH earbuds inserted

... earbuds and charging case are being charged

... earbuds and charging case are fully charged

... a charging error/ battery error has been detected in at least one earbud (>

34)

Charging case WITHOUT earbuds inserted

... charging case is being charged

... charging case is fully charged

... a charging error/ battery error has been detected in the charging case (>

34)

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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:

Product overview

LED

lights up green

pulses yellow

lights up yellow

lights up red

flashes red

Charging case WITH earbuds inserted

... earbuds are fully charged and the charging case can still charge at least one complete cycle

... earbuds are being charged via the rechargeable bat tery of the charging case

... earbuds are fully charged, the charging case cannot charge another complete cycle

... rechargeable batteries of the earbuds and the charging case are empty

... a charging error/ battery error has been detected in at least one earbud (>

34)

Charging case WITHOUT earbuds inserted

... charging case is fully charged

–

... charging case is charged less than 90

... rechargeable battery of the charging case is empty

... a charging error/ battery error has been detected in the charging case (>

34)

If the LED does not light up:

• Clean the contacts on the earbuds and in the charging case (>

33).

• Charge the rechargeable batteries of the earbuds and the charging case until the LED lights up again (>

15).

Overview of the LED indications of the earbuds

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Product overview

LED Meaning; the earbuds ...

flashes red-blue for approx. 1 minute

flashes blue 3x

flashes red 3x

lights up blue

lights up red

flashes red quickly

flashes red slowly

flashes redgreen for approx. 1 minute

... are in Bluetooth pairing mode

... Bluetooth pairing or earbud pairing successful

... Bluetooth pairing or earbud pairing failed

... are connected to a device via Bluetooth (master earbud (R) is connected to the smartphone, slave earbud (L) is connected to the master earbud (R))

... are 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))

... rechargeable battery is almost empty

... system error – the Smart Control app may display details. Perform a restart (>

... are in earbud pairing mode (to pair the right and left earbud)

35).

When you insert the earbuds into your ears, the LEDs of the earbuds automatically go off.

Notes on voice prompts

The earphones output voice promtps for events (the table gives some examples). 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 prompt Meaning/earbuds...

“Power on” ... are switched on

“Power off” ... switch off

“Connected” ... connected via Bluetooth

“No connection” ... not connected via Bluetooth

“Pairing” ... in Bluetooth pairing mode

“Pairing cancelled” ... Bluetooth pairing cancelled

“Pairing successful” ... Bluetooth pairing successful

“Pairing failed” ... Bluetooth pairing not successful

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Product overview

Voice prompt Meaning/earbuds...

“Recharge headset” ... rechargeable battery is almost

empty. Recharge the rechargeable battery.

“Call rejected” ... incoming call rejected

“Call ended” ... call ended

“Volume min” ... volume set to minimum

“Volume max” ... volume set to maximum

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Getting started

USB-C

USB-A

LMSXS

Getting started

1. Waking up the earbuds and the charging case and charging the rechargeable batteries

Upon delivery, the rechargeable batteries of the earbuds and the charging case are in sleep mode and have to be woken up by con necting them to a power source once.

▷ Insert the earbuds into the charging case.

▷ Connect the USB-C cable to the charging case and to a USB

power source (> The earbuds and the charging case are woken up and the rechargeable batteries are being charged. The earbuds are now ready for use.

Alternatively:

▷ Press and hold the LED button on the charging case for 3 sec-

onds. The earbuds and the charging case are woken up and can now be used.

15).

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2. Selecting suitable ear adapters for optimum fit of the earbuds

The perceived sound quality including bass performance and the best possible noise cancellation of the earphones depends to a large extent on the correct fit of the earbuds in the ear.

▷ Test which ear adapter size gives you the best sound quality and

the best wearing comfort.

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