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Sennheiser CX 400BT - True Wireless Earbuds

  • R4,690.00R3,890.00

Your day-to-day may change but your enjoyment of superior sound won’t. Powered by Sennheiser’s leading audio technology, the new CX 400BT True Wireless gives you total control over an exceptional sound experience

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Ex Tax: R3,890.00

Availability: Available - Free Delivery

Brand: Sennheiser

Product Code: CX-400BT

Tags:  cx400btcx 400bttwstrue wirelesssennheiser cx400bt

Superior sound. Tailored to you.

Your day-to-day may change but your enjoyment of superior sound won’t. Powered by Sennheiser’s leading audio technology, the new CX 400BT True Wireless gives you total control over an exceptional sound experience. With intuitive customizable controls, long-lasting battery life and a design made for all-day comfort, they are the ideal, uncompromised choice for people that are passionate about great sound.


Better sound. Better control.

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.


Premium sound. Any 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.


Premium sound. Any device.

Anytime. All the time.

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.


Minimalist Design. Stylish comfort.

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.


Customizable Touch Controls

  • Built-in Equalizer
  • 7mm dynamic driver
  • 20 hour battery life


Smart control app

Decide what you hear.

Use the transparent hearing settings to determine how much of ambient noise you want to hear.


Smart Control App

Create your sound experience.

Pair your Sennheiser device with our Smart Control app.


Enhance what you hear.

Adjust our intuitive equalizer to perfect your listening experience


Define your touch controls.

Control your music, voice assistants, and calls with adjustable touch controls you assign.


Decide what you hear.

Use the transparent hearing settings to determine how much of ambient noise you want to hear.


*Sennheiser Smart Control is a free app and compatible with most iOS and Android systems.



What's in the box?

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


Technical Data

  • Dimensions
    59 x 33.8 x 42.3 mm (earbuds and charging case)
  • Weight
    49g (both earbuds and charging case) 6g (single earbud) 37g (charging case)
  • Package dimensions
    (L x B x H) 170 x 115 x 47 mm
    • THD, total harmonic distortion
      <0,08% (1kHz / 94dB)
    • USB Standard
      USB-C
    • Warranty
      2 years
    • Frequency response (Microphone)
      100 Hz to 10 kHz
    • Bluetooth Version
      Bluetooth 5.1 compliant
    • Supported Profiles
      A2DP, AVRCP, HSP, HFP
    • Frequency response
      5 - 21,000 Hz
    • Ear coupling
      In-ear, closed acoustics
    • Charging time
      1.5 h for full charge / 10 min for 1 h playtime
    • Power supply
      5 V⎓, 600 mA max USB charging via USB-C socket at charging case
    • Battery Specification
      Built-in Lithium-Ion rechargeable batteries
    • Codecs
      SBC, AAC, aptX™
    • Battery time
      Up to 7 hrs music playtime with earbuds Up to 20 hrs music playtime with charging case
    • App support
      Sennheiser Smart Control App for iOS™ and Android™
    • Speaker type
      Sennheiser 7mm dynamic driver