SENNHEISER CX 400BT True Wireless Earbuds


Our top priority is audio quality: With a 7 millimeter dynamic driver and a wide range of Bluetooth codec support, you’ll get great sound.

Long battery life (20 hours) and a pleasant wearing experience: With only one fee, you can listen to music for up to 20 hours. With four ear adapter sizes, the ergonomic design provides optimum comfort and stable fit. ​​

Adapt to your day-to-day requirements: Music, phone calls, and the voice assistant all have fully customizable controls. – An audio equalizer built-in adjusts the sound to your tastes.

With our app, you have complete digital control: Our Smart Control software for iOS and Android helps you to customize all of the earphone features to your liking.

With our broad range of audio codec support, including AAC, aptX, SBC, and passive Noise Cancelling, you will enjoy outstanding sound quality regardless of your mobile device or surroundings.

Sennheiser employs decades of experience to push the boundaries of audio technology with each new product, resulting in new and unforgettable sound experiences.

CX 400BT True Wireless, Charging case, USB-C charging cable, Silicone ear adapter sets (in sizes XS/S/M/L) are all included.


Black SENNHEISER CX 400BT True Wireless Earbuds – Bluetooth In-Ear Headphones for Music and Calls – with Noise Cancellation and Customizable Touch Controls

Premium dynamic driver technology powers these true wireless headphones, ensuring pure listening pleasure. The earphones are easy to use and adapt to your everyday hearing needs and preferences thanks to the built-in equalizer and adjustable touch control. For quick reuse, use the quick charge feature: 10 minutes of charging equals 1 hour of music playback; 60 minutes of charging equals 5 hours.

The CX 400BT True Wireless has a 7-hour battery life for all-day listening, with up to 20 hours available while recharging on the go with the charging case. The ergonomically shaped earbuds come in a variety of sizes to ensure the best fit and comfort for all-day listening.

From IR-stereo TV listening systems to audiophile optical home systems to luxury Bluetooth travel headsets, SENNHEISER provides a wide range of wireless headphones styles to meet a variety of needs. There will be no wires between you and your audio experience.

Nothing less than shaping the future of audio is our mission at SENNHEISER. We are proud of our heritage and technological accomplishments as a third-generation family company. We aspire to empower everyone with new dimensions of sound as one of the leading manufacturers of headphones, loudspeakers, microphones, and wireless transmission technology.

The ability to turn on and off automatically
Music can be played for up to 20 hours.
Charging time is about 1.5 hours.
Bluetooth 5.1 Support for a wide variety of Bluetooth audio codecs (SBC, AAC & aptX codecs support)
Touch controls that can be customized
Warranty duration of two years


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