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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
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Table of Contents
Related Manuals for Sennheiser CX 120 BT
Summary of Contents for Sennheiser CX 120 BT
- Page 1 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...
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Page 2: Important Safety Instructions
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. ▷... - Page 3 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-...
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Page 4: Package Contents
Online you can find: • this detailed instruction manual and additional information (www.sennheiser.com/download) 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“. 4 | CX 120BT... -
Page 5: Product Overview
Product overview Product overview Model: CX 120BT Earphones Bluetooth antenna (not visible) Cable holder Volume button / track + Multi-function button Volume button / track - Micro-USB input Cover for USB socket Overview of the LED display During operation CX 120BT | 5... -
Page 6: Notes On Voice Prompts
Product overview 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 are connected to a device via Blue- flashes blue tooth flashes red... - Page 7 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. CX 120BT | 7...
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Page 8: Getting Started
Getting started 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 (> Micro-USB USB-A 2. -
Page 9: Using The Headphones
When the headphones are being charged, the LED lights up (> Sennheiser recommends using the supplied USB cable and a com- patible standard USB power supply for charging the headphones. Charging the headphones' rechargeable battery... -
Page 10: Information On The Bluetooth Wireless Connection
Using the headphones If you switch on the headphones for the first time, they auto- matically switch to pairing mode. 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). - Page 11 Using the headphones Pairing the headphones with a Bluetooth device 1. Switch the headphones on (> 13) and place them close to the Bluetooth device (max. 20 cm). 2. Press and hold the multi-function button for 4 seconds. You hear the voice prompt “power on” and a beep sound. The LED flashes blue and red.
- Page 12 Using the headphones Selecting suitable ear adapters for optimum fit of the headphones The perceived sound quality and bass performance of the head- phones depends to a large extent on their correct fit in the ear. ▷ Pull the ear adapter away from the in-ear sound tunnel. ▷...
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Page 13: Wearing The Headphones
Using the headphones Wearing the headphones ▷ You can wear the headphones with the cables either behind your head or in front. ▷ Assign the right earphone to your right ear and the left earphone to your left ear. ▷ Press the earphones lightly into the ear canal. -
Page 14: Switching The Headphones Off
Using the headphones ▷ Press the multi-function button for 2 seconds. The headphones switch on. You hear the voice prompt “Power on” and the LED display flashes blue 3x. If a paired Bluetooth device is within the transmission range, you hear the voice prompt “Device (1) connected”. -
Page 15: Adjusting The Volume
Using the headphones Voice prompt Meaning “Between 2 and 4 hours Battery is less than 50% charged. In play time” addition, the LED lights up purple. “Between 4 and 6 hours Battery is more than 50% charged. In play time” addition, the LED lights up blue. - Page 16 Using the headphones Controlling the music playback The music playback functions are only available when the head- phones and the device are connected via Bluetooth. Some smart- phones or music players may not support all functions. Playing/pausing music ▷ Press the multi-function button 1x. Multi-function button Function Press 1x...
- Page 17 Using the headphones Accepting/rejecting/ending a call If your headphones are connected to a smartphone and you receive a call, you hear a ring tone in the headphones and the LED flashes purple. If you are playing music when you receive a call, the music pauses until you end the call.
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Page 18: Voice Control
Using the headphones Redialing You can only use this function when the headphones are not actively playing music or are used for making calls. ▷ To do so, press the multi-function button 2x. You hear the voice prompt “Redialing”. ▷ Press the multi-function button 1x to cancel redialing. -
Page 19: Care And Maintenance
Clean the product only with a soft, dry cloth. Replacing the ear adapters For reasons of hygiene, you should replace your ear adapters from time to time. Spare ear adapters are available from your Sennheiser partner. 1. Pull the ear adapter away from the in-ear sound tunnel. - Page 20 If a problem occurs that is not listed in the FAQ section or if the prob- lem cannot be solved with the proposed solutions, please contact your Sennheiser partner for assistance. To find a Sennheiser partner in your country, search at www.sennheiser.com > “Service & Support”. Leaving the Bluetooth transmission range Wireless calling and streaming are only possible in the Bluetooth transmission range of your smartphone.
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Page 21: Specifications
Specifications Specifications Model: CX 120BT Wearing style Bluetooth® neckband cable Ear coupling ear-canal Frequency response 17 Hz to 21,000 Hz Transducer principle dynamic Transducer size 10 mm Sound pressure level (SPL) 112 dB (1 kHz/0 dBFS) THD (1 kHz, 100 dB) <... -
Page 22: Manufacturer Declarations
Manufacturer Declarations Manufacturer Declarations Warranty Sennheiser electronic GmbH & Co. KG gives a warranty of 24 months on this product. For the current warranty conditions, please visit our website at www.sennheiser.com or contact your Sennheiser partner. In compliance with the following requirements •... - Page 23 Manufacturer Declarations aptX is a trademark of Qualcomm Technologies International, Ltd., registered in the United States and other countries, used with per- mission. Other product and company names mentioned in the user documen- tation may be the trademarks or registered trademarks of their respective holders.