CX 400BT True Wireless Earbuds

CX 400BT True Wireless Refurbished

Superior sound. Tailored to you.

Accessories and Cables
2 years manufacturer warranty
30-Day Free Return
Limited Stock

Certified Refurbished

Products that have been tested, checked, and thoroughly inspected to meet the same high-quality standards as our new products.

Powered by our leading audio technology

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.

cx 400 BT True Wireless

Better sound. Better control.

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

CX 400 BT True Wireless

A wide range of audio codec support

Enjoy premium sound with any mobile device.

CX 400 BT True Wireless

Never miss a beat

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

CX 400 BT True Wireless

A perfect, in-ear fit

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

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  • Sennheiser signature sound
  • Customizable touch controls
  • Up to 20 hours play time
  • Ergonomic design
  • Passive Noise Cancellation
CX 400BT Product image

Control, personalize, update and configure

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

App sennheiser

Selectable sound modes

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

Specifications

Wearing style
true wireless stereo earphones
Frequency response (speaker)
5 Hz to 21 kHz
Ear coupling
Ear canal
Transducer size
7 mm

What's included

  • CX 400BT True Wireless Earbuds
  • Silicone ear adapter sets (XS, S, M, L)
  • Charging Case
  • USB-C Cable
  • Quick Guide & Safety Guide

Downloads

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