Sennheiser CX350BT, SEBT1 User manual

CX 350BT

In-Ear Wireless

Model: SEBT1

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: 01/21 A02

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 bet ween 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 cho king 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

recommended by Sennheiser.

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

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.

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Important safety instructions

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.

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.

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 overa

ged rechargeable batteries or exceeding the Bluetooth transmission range.

Before putting into operation, please observe the respective country-specific regulations.

CX 350BT | 3

Package contents

Headphones

USB charging cable with USB-C and USB-A connector

Silicone ear adapter set in the following sizes: XS, S, M (pre-mounted upon delivery) 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 getting to know the headphones (www.sennheiser.com/smartcontrol)

You can find a list of accessories on the CX 350BT product page at partner: www.sennheiser.com > “Service & Support”.

www.sennheiser.com. Contact your local Sennheiser

4 | CX 350BT

Product overview

OFF

PAIRING

MUSIC

TELEPHONE

Right R

Left L

Product overview

CX 350BT

Model: SEBT1

Earphones

Voice assistant button

LED

Volume + button (volume up)

Multi-function button

Volume - button (volume down)

USB-C socket for charging the rechargeable battery

Cover for USB-C socket

Microphone

CX 350BT | 5

Product overview

Overview of the LED indications of the headphones

LED Meaning; the headphones

lights up red are being charged

lights up blue are fully charged

flashes blue are switched on

flashes red-blue approx. 1 min

flashes blue Bluetooth pairing successful

flashes red Bluetooth pairing failed

flashes blue

pulses red approx. 3 sec

flashes red

flashes red are switched off

If the LED does not light up immediately during charging, clean the charging socket and charge the headphones until the LED lights up again (

> 9).

are in Bluetooth pairing mode

are connected to a device via Bluetooth

are not connected to a device via Bluetooth or the connection has been lost

rechargeable battery is almost empty

Notes on voice prompts

6 | CX 350BT

The headphones output voice prompts for the following functions.

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

Product overview

Voice prompt Meaning/headphones

“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.

“Volume min” volume set to minimum

“Volume max” volume set to maximum

CX 350BT | 7

Getting started

USB-C USB-A

Hold

M L

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 inter ruption (> 9).

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 (

> 12).

3. Connecting the headphones to a Bluetooth device

Connect the headphones to your smartphone via Bluetooth (> 10).

4. Selecting suitable ear adapters for optimum fit of the headphones

8 | CX 350BT

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 4 different ear adapters in size XS, S, M

and L.

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

> 12).

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