Sennheiser CX 350BT Earphones - Black

Code: 508382
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Manufacturer Sennheiser

It’s time to break free

Sennheiser’s CX 350BT wireless earphones are the ideal companion for great sounding audio on the go. With support for the latest wireless technologies including Bluetooth 5.0, AAC and AptX™ Low Latency, the CX 350BT delivers a great listening experience.

Your faithful companion

With Sennheiser sound quality, 10-hour battery life and advanced features like voice assistant support, the stylish CX 350BT wireless earphones are the ideal companion for enjoying music and videos on the go without compromise.
Your faithful companion

Exceptional wireless sound

A great sound experience is assured by the latest wireless technology, including AAC and AptX™ Low Latency codecs for audio that stays perfectly in sync with onscreen action on compatible devices. Multi-pairing and Bluetooth 5.0 compatibility ensure fast, reliable connectivity with two devices simultaneously.
Exceptional wireless sound

More features, more control

The CX 350BT ensures a truly personal listening experience thanks to the Sennheiser Smart Control App which allows for sound customization via its equalizer. Along with the personalization features, the app provides battery status, a Quick Guide, firmware updates and a podcast mode for optimized speech.
More features, more control

Personalize your sound experience

Listen to your music the way you want. The free dedicated application Smart Control of Sennheiser for iOS and Android provides an effortless way to control, personalize, update and configure your Sennheiser headphone, headset or soundbar.
Personalize your sound experience


  • Advanced wireless Bluetooth 5.0 technology for reliable connectivity
  • Superior audio with AAC, SBC codec and additional AptX™ Low Latency support
  • 10-hours of battery life
  • Music, calls and voice assistant interaction via four-button remote, with Siri and Google Assistant support
  • Sennheiser’s Smart Control app allows for customization of sound via equalizer and a podcast mode for optimized speech, battery status, user manuals and firmware updates
  • Designed for comfort with four interchangeable ear tip sizes included for optimal fit and sound isolation
  • Convenient multi-connection pairing with two devices simultaneously

What's in the box?

  • CX 350BT earphones
  • Ear adapter set (XS/S/M/L)
  • USB-C charging cable
  • Quick Guide
  • Safety Guide
Ear Coupling:
Closed acoustic
Travel, Mobile Devices
Frequency Response (Headphones):
17Hz - 20kHz
Sound Systems:
Impedance (Headphones):
28 Ω
Sound Pressure Level (SPL):
112 dB (1 kHz/0 dB FS)
Total Harmonic Distortion (THD):
<0.5 % (1 kHz, 100 dB SPL)
Transducer Principle:
Dynamic, 9.7 mm
Frequency Response (Microphone):
100Hz - 8kHz
Pick-up Pattern:
MEMS, omnidirectional
Microphone Sensitivity:
- 42 dB V/Pa
Bluetooth Version:
Supported Profiles:
SBC, AAC, AptX™, AptX™ Low Latency
Charging time:
Approx. 1.5 hrs
Operating time:
10 hrs (music playback via SBC) with headphones’ rechargeable battery; 340 hrs in standby mode
Battery Specification:
Lithium-Polymer rechargeable battery: 3.7 V ⎓, 100mAh
up to 10 meters
Carrier frequencies:
2,402 MHz - 2,480 MHz
USB Type C charging cable
12 g
Microphone, Volume Control
Additional Accessories:
Sennheiser CX 350BT Ear adapters - Size XS
In stock
Sennheiser CX 350BT Ear adapters - Size XS
5,50 лв
Sennheiser CX 350BT Ear adapters - Size S
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Sennheiser CX 350BT Ear adapters - Size S
5,50 лв
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Sennheiser CX 350BT Ear adapters - Size M
In stock
Sennheiser CX 350BT Ear adapters - Size M
5,50 лв
Sennheiser CX 350BT Ear adapters - Size L
In stock
Sennheiser CX 350BT Ear adapters - Size L
5,50 лв
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