Sennheiser CX 400BT True Wireless
The
-- As reviewed by Rtings

Product details
- Audio quality is our top priority: Experience great sound with a 7 millimeter dynamic driver and a wide range of Bluetooth codec support
- Long battery life (20 hours) and comfortable wearing: Get up to 20 hours of music playtime with one charge - The ergonomic design offers optimal comfort and secure fit with 4 ear adapter sizes
- Personalize to your everyday needs: Fully adaptable controls for music, calls and voice assistant - Built-in audio equalizer adapts the sound to your personal preferences
- Full digital control with our app: Our Smart Control app for iOS / Android allows all of the earphone functionalities to be modified to your personal choice
- Enjoy outstanding sound quality no matter your mobile device or your surroundings with our wide range of audio codec support including AAC, aptX, SBC as well as passive Noise Cancelling
- Sennheiser uses decades of expertise to drive the world of audio technology forward with every product - for new, unique sound experiences
- Included components: CX 400BT True Wireless, Charging case, USB-C charging cable, Silicone ear adapter sets (in size XS/S/M/L)
PROS
+ Great build quality.
CONS
- Disappointing battery performance.
- Bulky design.
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Expert reviews and ratings
By Rtings on November 25, 2020
The
71
By PCMag on October 23, 2020
The Sennheiser CX 400BT earphones deliver some of the best on-ear controls and audio performance you'll find in a true wireless pair.
80
By TechRadar on September 04, 2020
They’re not the most glamorous nor the most distinctive – but Sennheiser’s new CX400BT true wireless earbuds have it where it counts. They sound open and articulate, and if there’s detail in a recording to be extracted, you can rely on them to do just that.
90