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CX 400BT Charging Case (black)

CX 400BT Charging Case (white)

CX True Wireless

CX Plus True Wireless

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Immerse yourself in exceptional sound powered by Sennheiser’s 7mm TrueResponse transducer, personalized with the built-in equalizer and Bass Boost.

Experience non-stop play time with 20 hours of battery life – 7 hours on a single charge and a further 13 hours via the charging case.

The ergonomic in ear design and selection of 4 ear adapter sizes (XS/S/M/L) creates a secure fit for excellent passive noise cancelling.

Manage your music, make calls or trigger the voice assistant with customizable touch-sensitive technology built into both earbuds.

Dive into your favorite music for as long as you like with an ergonomic design made for all-day wearing.

CX 400BT True Wireless

With passive noise cancellation, customizable controls, long battery life and a design made for all-day comfort, you’re in total control of an exceptional sound experience.

Powered by our leading audio technology

Delivers high-fidelity sound with deep bass, natural mids and a clear, detailed treble.

Whether you’re in the mood for calming tunes or crave some thrilling beats, the bespoke drivers of the new CX 400BT True Wireless deliver high-fidelity sound with deep bass, natural mids and a clear, detailed treble. Plus, you can personalize your listening experience with built-in equalizers to enjoy amazing sound quality that’s tailored to you.

Better sound. Better control. 

Enjoy premium sound with any mobile device.

No matter where you stand – iOS or Android – you’ll always get to enjoy the outstanding sound quality of the new CX 400BT True Wireless earbuds. Thanks to our wide range of audio codec support including SBC, AAC and aptX, premium sound is guaranteed with any mobile device.

A wide range of audio codec support

20 hours of battery life, plus a compact charging case. 

Never miss a beat throughout the day with 20 hours of battery life – 7 hours on a single charge and a further 13 hours with the small, sleek and compact charging case. The new CX 400BT True Wireless earbuds are designed to ensure you get premium sound wherever you go.

Never miss a beat

The new CX 400BT True Wireless have an ergonomic design created for all-day comfortable wearing.

The new CX 400BT True Wireless is made for those who enjoy diving into a long playlist, a lively audiobook or a loving phone call. Available in black and white, they have an ergonomic design created for all-day comfortable wearing. The earbuds achieve a perfect fit in the ear for excellent passive noise cancellation and keep the earbuds securely in place, thanks to adapters provided in a choice of four sizes.

A perfect, in-ear fit

Listen to your music the way you want with the Sennheiser Smart Control App.

Control, personalize, update and configure

The Sennheiser Smart Control App, lets you tailor the sound experience to your travel playlist whether that be music, news, podcasts, or film.