Sennheiser Wireless In-Ear Headphones in Black- CX 350BT Black




The 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. The Sennheiser Smart Control App facilitates sound customization via its equalizer as well as firmware updates and a podcast mode.

It’s time to break free. 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.

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.

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.

Personalize your sound experience with the Smart Control App

Listen to your music the way you want. This free dedicated app for iOS and Android provides an effortless way to control, personalize, update and configure your Sennheiser headphone, headset or soundbar. (EQ function update coming soon)

What's in the box?

  • CX 350BT earphones
  • Ear adapter set (XS/S/M/L)
  • USB-C charging cable
  • Quick Guide
  • Safety Guide
Technical data
Ear pad materialBiocompatible Silicone
Battery time10 h, SBC
USB StandardType C
Weight13 g
Transducer principleDynamic
Ear couplingear-canal
THD, total harmonic distortion0.5 % (1 kHz, 100 dB SPL)
Sound pressure level (SPL)110 dB (1 kHz/0 dB FS)
Frequency response17 - 20,000 Hz (- 10 dB)
MicrophoneMEMS, omnidirectional
Impedance28 Ω
Supported ProfilesA2DP, AVRCP, HSP, HFP
Bluetooth Version5.0
CodecsSBC, AAC, AptX™, AptX™ Low Latency

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