Sennheiser CX 120 BT Manual de usuario

Model: CX 120BT

In-Ear Wireless

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: 09/20 A01

Important safety instructions

2 | CX 120BT

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.

▷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.

▷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).

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.

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

ommended by Sennheiser.

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

Safety instructions for Lithium-Polymer 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,

•smokeorgasdevelopment.

Important safety instructions

CX 120BT | 3

Notes on data collection and processing

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.

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 dam-

ages 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 coun-

try-specific regulations.

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.

Package contents

4 | CX 120BT

Package contents

Online you can find:

• this detailed instruction manual and additional information

(www.sennheiser.com/download)

Earphones

USB charging cable with micro-USB and

USB-A connector

Silicone ear adapter set in the following sizes:

S, M (pre-mounted upon delivery) and L

Quick guide/Safety Guide

You can find a list of accessories on the CX 120BT product page

at www.sennheiser.com. Contact your local Sennheiser part-

ner: www.sennheiser.com > „Service & Support“.

Product overview

CX 120BT | 5

Product overview

Model: CX 120BT

Overview of the LED display

During operation

Earphones

Bluetooth antenna (not visible)

Cable holder

Volume +button / track +

Multi-function button

Volume -button / track -

LED

Micro-USB input

Cover for USB socket

Product overview

6 | CX 120BT

During phone calls

Notes on voice prompts

The headphones 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).

LED Meaning; the headphones

lights up red are being charged

lights up blue are fully charged

flashes blue are switched on

flashes red-blue are in Bluetooth pairing mode

flashes blue Bluetooth pairing successful

flashes red Bluetooth pairing failed

flashes blue are connected to a device via Blue-

tooth

flashes red are switched off

LED Meaning

flashes purple Incoming call

flashes red

Incoming call and the rechargeable

battery of the headphones is almost

empty

If the LED does not light up immediately during charging, clean

the charging contacts and charge the headphones until the

LED lights up again (>9).

Voice prompt Meaning/headphones

“Power on” are switched on

“Power off” are switched off

“Device (1) (2) connected” are connected to device 1 or 2

“Lost connection” are not connected via Bluetooth

“Pairing” are in Bluetooth pairing mode

“Pairing successful” Bluetooth pairing successful

“Pairing failed” Bluetooth pairing failed

“Call rejected” incoming call rejected

“Call ended” call ended

“Redialing” redials the last dialed number

“Voice dialing” Voice dialing is activated

Product overview

CX 120BT | 7

“Mute on” Microphone is muted, active call is

put on hold

“Mute off” Microphone is reactivated

“Recharge headset” Rechargeable battery is empty.

Recharge the headphones.

Voice prompt Meaning/headphones

Getting started

8 | CX 120BT

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 (>9).

2. Connecting the headphones to a Bluetooth

device

Connect the headphones to your smartphone via Bluetooth (>9).

3. Selecting suitable ear adapters for optimum

fit of the headphones

The perceived sound quality and bass performance depends to a

large extent on the correct fit of the headphones in the ear.

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

the best wearing comfort.

▷You can choose between 3 different ear adapters in size S, M and

The ear adapters must fit snugly in the ear canal and completely seal

your ears (>12).

Micro-USB USB-A

Hold

SM L

Using the headphones

CX 120BT | 9

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. 1.5 hours. Before using the headphones

for the first time, charge the rechargeable battery for a complete

charging cycle without interruption.

When the headphones are being charged, the LED lights up (>5).

Sennheiser recommends using the supplied USB cable and a com-

patible standard USB power supply for charging the headphones.

Charging the headphones' rechargeable

battery

1. Connect the micro-USB connector of the USB cable to the micro-USB

socket of the headphones.

2. Connect the USB-A 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:

Connecting the headphones to a

Bluetooth device

To be able to use the Bluetooth wireless connection, you must regis-

ter both devices (headphones and e.g. smartphone) via the device

settings of your smartphone. This process is called pairing.

If operation differs from the steps mentioned, also refer to the

instruction manual of the Bluetooth device you are using.

LED Meaning

lights up red Rechargeable battery is being charged

lights up blue Rechargeable battery is fully charged

USB-A

Micro-USB

1,5 HRS

Using the headphones

10 | CX 120BT

Information on the Bluetooth wireless

connection

The headphones are compatible with Bluetooth 4.2.

If your audio source supports aptX audio encoding, music is auto-

matically played in high audio quality: 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.

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.

If you switch on the headphones for the first time, they auto-

matically switch to pairing mode.

Paired and connected Bluetooth device

Paired Bluetooth device (currently not connected)

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