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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

Summary of Contents for SEBT1

Page 1: ...e 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 ...

Page 2: ... ween the product component containing the magnet and the car diac 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 ...

Page 3: ...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 Sennhe...

Page 4: ...tting to know the head phones www sennheiser com smartcontrol 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 You can find a list of accessories on the CX 350BT product page at www sennheiser com Contact your local Sennheiser partner www sennheiser com Service Support ...

Page 5: ...1 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 ON OFF PAIRING MUSIC TELEPHONE 7 M 1 4 3 2 5 Right R Left L 7 5 9 8 6 ...

Page 6: ...ses red approx 3 sec are not connected to a device via Bluetooth or the connection has been lost flashes red rechargeable battery is almost empty 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 Voice prompt Meaning headphones Power on are switched on Power off are switched off ...

Page 7: ...hone 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 Voice prompt Meaning headphones ...

Page 8: ...d 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 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 yo...

Page 9: ... and a compa tible standard USB power supply for charging the headphones Charging the headphones rechargeable battery 1 Connect the USB C connector of the USB cable to the USB C 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 proce...

Page 10: ...or AAC 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 p...

Page 11: ...er the default pin code 0000 If pairing was successful you hear the voice prompts Pairing successful and Device 1 connected The LED flashes blue 3x Disconnecting the headphones from a Bluetooth device Via the menu of your Bluetooth device disconnect the connection to the headphones The headphones are disconnected from the Bluetooth device You hear the voice prompt Lost connection The headphones th...

Page 12: ...ones via Bluetooth 10 Start the Smart Control app Follow the instructions in the app Selecting suitable ear adapters for optimum fit of the headphones The perceived sound quality and bass performance of the headpho nes depends to a large extent on their correct fit in the ear Pull the ear adapter away from the in ear sound tunnel Mount the new ear adapter to the in ear sound tunnel Ensure that it ...

Page 13: ... range you hear the voice prompt Device 1 connected The LED flashes blue 3x If the earphones fit too loose in the ear canal and fall out easily Try larger ear adapters If you feel immediate pressure when wearing the earphones Try smaller ear adapters R WARNING Danger of hearing damage due to high volume levels Listening at high volume levels can lead to permanent hearing defects Before putting the...

Page 14: ...hear the voice prompt More than xx battery left If Bluetooth is activated and the headphones cannot find a paired Bluetooth device within a few minutes you hear the voice prompt Lost connection The LED flashes red The headphones switch to standby mode The headphones automatically switch to idle mode if no paired Bluetooth device can be found within 5 minutes You can wake up the headphones from idl...

Page 15: ...istant of your smartphone is activated depending on the system or app used on your smartphone Siri Google Assistant Baidu Ask the voice assistant your question or make a request To cancel the voice assistant voice dialing Press the voice assistant button 1x WARNING Danger of hearing damage due to high volume levels Listening at high volume levels can lead to permanent hearing defects Before puttin...

Page 16: ...ns are only available when the headphones and the smartphone are connected via Bluetooth Some smartphones may not support all functions The multi function button allows you to control the call functions Making a call Dial the desired number on your smartphone If your smartphone does not automatically transfer the call to the headphones select CX 350BT as the output device on your smartphone see th...

Page 17: ...s The microphone is muted You hear the voice prompt Mute on To continue the call and reactivate the microphone Press the volume button for 2 seconds The microphone is reactivated You hear the voice prompt Mute off Multi function button Function Press 1x Accepts a call Press 1x Ends a call Voice prompt Call ended Hold for 2 sec Rejects a call Voice prompt Call rejected Press 1x Accepts an incoming ...

Page 18: ...u require the Smart Control app 12 Adjusting sound effects the equalizer To be able to use the sound effects equalizer you require the Smart Control app 12 In the Smart Control app select the desired sound effects via the equalizer The sound effects are stored in your headphones These sound settings are active even without using the Smart Control app i e when you are using another Bluetooth device...

Page 19: ... pur chase or within the warranty period you suspect that the recharge able battery is obviously defective or if a charging error battery error is displayed 6 stop using the product disconnect it from the power supply system and contact your Sennheiser partner Your Sennheiser partner will coordinate the repair replacement with you Do not return a product with a defective battery to your dealer or ...

Page 20: ...es can be downloaded free of charge from the Inter net using the Sennheiser Smart Control app Connect the headphones to your smartphone and start the Smart Control app 12 The app provides information on available firmware updates and guides you through the installation process ...

Page 21: ... depends on environmental conditions such as wall thickness wall composition etc With a free line of sight the transmission range of most smartphones and Bluetooth devices is up to 10 meters If you and therefore the headphones leave the Bluetooth transmis sion range of the smartphone the sound quality deteriorates increa singly until you hear the voice prompt Lost connection and the connection bre...

Page 22: ...ch audio omni directional Power supply built in rechargeable lithium polymer battery 3 7 V 100 mAh USB charging 5 V 100 mA max Operating time 10 hrs music playback via SBC with headphones rechargeable battery 240 hrs in standby mode Charging time of rechargeable batteries approx 2 5 hrs Temperature range operation 5 C to 40 C 5 C charging 10 C to 40 C 5 C storage 20 C to 70 C Relative humidity ope...

Page 23: ...s on waste segregation applicable in your country Further information on the recycling of theses products can be obtained from your municipal administration from the municipal col lection points or from your Sennheiser partner The separate collection of waste electrical and electronic equip ment batteries rechargeable batteries if applicable and packa gings is used to promote the reuse and recycli...

Page 24: ...Manufacturer Declarations 24 CX 350BT Other product and company names mentioned in the user documen tation may be the trademarks or registered trademarks of their res pective holders ...

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