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Sennheiser Consumer Audio CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls - with Noise Cancellation and Customizable Touch Controls, White

4.2 4.2 out of 5 stars 2,655 ratings

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Purchase options and add-ons

Brand Sennheiser Consumer Audio
Model Name CX 400BT True Wireless - White
Color White
Form Factor In Ear
Connectivity Technology Bluetooth

About this item

  • 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 everday 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 and 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)
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Sennheiser Consumer Audio CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls - with Noise Cancellation and Customizable Touch Controls, White
Sennheiser Consumer Audio CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls - with Noise Cancellation and Customizable Touch Controls, White
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Price-25% $149.95
List:$199.95
-45% $98.99
List:$179.95
-15% $108.55
Typical:$127.36
-40% $135.79
List:$227.99
$79.99-40% $89.99
List:$149.99
Delivery
Get it as soon as Sunday, Mar 24
Get it as soon as Sunday, Mar 24
Get it as soon as Sunday, Mar 24
Get it as soon as Sunday, Mar 24
Get it as soon as Sunday, Mar 24
Get it as soon as Sunday, Mar 24
Customer Ratings
Sound quality
4.3
4.1
4.6
4.5
4.4
4.0
Battery life
4.1
4.1
4.3
4.2
4.3
4.1
Noise cancellation
3.6
3.8
4.1
4.3
3.8
3.8
Sold By
EZ digital
Amazon.com
Amazon.com
Amazon.com
EarFun US
Amazon.com
connectivity tech
Bluetooth
Bluetooth
Wireless
Bluetooth
Wireless
Bluetooth
headphones form factor
In Ear
In Ear
In Ear
In Ear
In Ear
In Ear
connector type
wireless
wireless
wireless
wireless
wireless
noise control
sound isolation
active noise cancellation
active noise cancellation
active noise cancellation
active noise cancellation
active noise cancellation
cable feature
Without Cable
Without Cable
Without Cable
Without Cable
Retractable
Without Cable
control type
Voice Control
touch
Voice Control
Voice Control
Touch Control
Noise Control
water resistance
not water resistant
water resistant
water resistant
water resistant
waterproof
water resistant
material
Silicone
Plastic
Plastic
Composite
Acrylonitrile Butadiene Styrene (ABS), Polycarbonate (PC), Silicone

From the manufacturer

Sennheiser CX 400BT True Wireless
Sennheiser CX 400BT True Wireless

Better sound. Better control.

Whether you’re in the mood for calming tunes or crave some thrilling beats, the bespoke drivers of the CX 400BT True Wireless deliver high-fidelity sound with deep bass, natural mids and a clear treble. Plus, you can personalize your listening experience with the Smart Control App, which lets you play with built-in equalizers for an even more amazing sound quality.

Sennheiser CX 400BT True Wireless

Tune in. Switch off.

For those who always like to be on the ball, on the beat and on-call, the customizable touch controls on both earbuds make it easy to enjoy a smarter and more connected lifestyle. The touch-sensitive interfaces provide fast access to voice assistants such as Siri and Google Assistant, as well as intuitive control of your music and calls.

Sennheiser CX 400BT True Wireless

Sennheiser CX 400BT True Wireless

Sennheiser CX 400BT True Wireless

Premium sound. Any device.

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

Minimalist Design. Stylish comfort.

The 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.

Sennheiser CX 400BT True Wireless Sennheiser MOMENTUM True Wireless 2
CX 400BT True Wireless MOMENTUM True Wireless 2
Customer Reviews
4.1 out of 5 stars
5,338
Color variants Black & White Black & White
Battery life 7h + 13h (earbud + charging case) 7h + 21h (earbud + charging case)
Customizable controls
Call function
Active Noise Cancellation
Voice assistant access
Internal EQ / Custom presets
Transparent hearing
Smart pause
Splash Resistant (IPX4)

What's in the box

  • CX 400BT True Wireless, Charging case, USB-C charging cable, Silicone ear adapter sets (in size XS/S/M/L)
  • CX 400BT True Wireless, Charging case, USB-C charging cable, Silicone ear adapter sets (in size XS/S/M/L)
  • CX 400BT True Wireless, Charging case, USB-C charging cable, Silicone ear adapter sets (in size XS/S/M/L)
  • CX 400BT True Wireless, Charging case, USB-C charging cable, Silicone ear adapter sets (in size XS/S/M/L)
  • CX 400BT True Wireless, Charging case, USB-C charging cable, Silicone ear adapter sets (in size XS/S/M/L)
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    Product information

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here

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    Sennheiser Consumer Audio CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls - with Noise Cancellation and Customizable Touch Controls, White


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    Product Description

    SENNHEISER CX 400BT True Wireless Earbuds
    These true wireless headphones are powered by premium dynamic driver technology to ensure pure listening pleasure. The built-in equalizer and customizable touch control make the earphones simple to use and adapt to your daily hearing needs and habits. Use the quick charge functionality for fast reuse: 10min charging for 1 hour of music playtime​, after 60min charging you already have 5 hours. For all-day listening, the CX 400BT True Wireless has a 7-hour battery life with up to 20 hours available when recharging on-the-go with the charging case. The ergonomically formed earbuds in multiple sizes make sure you have the right fit and comfort for your ears for all-day listening.

    Product features:
    + Automatic on/off functionality
    + Up to 20 hours of music playtime
    + Approx. 1.5 hours charging time
    + Bluetooth 5.1​
    + Wide range of Bluetooth audio codec support (SBC, AAC & aptX codecs support)
    + Customizable ​touch controls
    Wireless headphones from SENNHEISER
    SENNHEISER offers a wide range of wireless headphones models, catering to different needs - from IR-stereo TV listening systems to audiophile digital home systems, to luxurious Bluetooth travel headsets. No wire will come between you and your sound experience.

    SENNHEISER
    Shaping the future of the audio world - nothing less is our goal at SENNHEISER. As a family business in its third generation, we are proud of our history and our technical achievements. As one of the leading manufacturers of headphones, loudspeakers, microphones and wireless transmission technology, we aim to inspire everyone with new dimensions of sound.

    Customer reviews

    4.2 out of 5 stars
    4.2 out of 5
    2,655 global ratings

    Customers say

    Customers are happy with value of the headphones. They mention that they have issues with connectivity, saying they randomly stop pairing with their devices. Customers have different opinions on sound quality, quality, battery life, performance, fit, and comfort.

    AI-generated from the text of customer reviews

    67 customers mention47 positive20 negative

    Customers like the value of the headphones. They say that the battery is pretty decent for the price range, the sound is good for the money, and the headphones are a great buy for the mny.

    "Summary: Better sound quality than most, cheaper than the top-of-the-line active noise cancelling sets, and consistent connectivity...." Read more

    "...for many years and these will not disappoint and at a phenomenal price point. They don't look 'fashionable' in your ears . . . but . . ...." Read more

    "...for something as unrepairable as TWS earbuds, and honestly the price was pretty bad, too--I remember later seeing them new for cheaper...." Read more

    "...Day sale in the $80 range, and I think they were still a great value at that price point as earbuds have gone up in price...." Read more

    374 customers mention255 positive119 negative

    Customers are mixed about the sound quality of the headphones. Some mention that the sound is good, the shape is unique, and they're prominent enough in their ears that people can tell they've got them in. The mic is decent, and the intuitive, simple to use Smart Control App allows you to customize sound levels. However, others say that they have issues with the sound coming out of the right earbud, and that the left bud sound faded.

    "...of the touch panel, and oddities of the eartips size, the sound quality is amazing, far better than I expected from a Bluetooth connection, esp...." Read more

    "...These are worn often, sometimes 12-13 a day. Phone calls sound amazing and while the mics are not the most noise canceling for cell calls out there,..." Read more

    "...Intuitive, simple to use Smart Control App allows you to customize sound levels and save presets, and allows you to customize touch commands-..." Read more

    "...Mic is decent and never had any problems with people understanding me even on windy high speed bike rides. Touch controls are great and responsive...." Read more

    139 customers mention86 positive53 negative

    Customers are mixed about the quality of the headphones. Some mention that the quality is good, while others say that the earbuds don't stay put for a whole song. The sound is notably superior, and the a solid earphone. However, some customers say that there are flaws in the design and that the headphones don' t hold up. The fit is a bit awkward, and they're not as good as the Airpods Pro. The build quality could feel cheap at times, and it's not as durable as the airpods pro.

    "...CONSTRUCTION 5/5: These have the typical high standard of build quality that I expect from Sennheiser. Nothing feels cheap or chincy...." Read more

    "...Microphone quality is the usual: it's good enough, but not as good as Airpods Pro, and clearly not the primary focus of the buds...." Read more

    "...The build quality is fine, but the fit is kinda, kinda bad. Whenever i run the right earbud cuts out for a split second everytime i take a step...." Read more

    "...The earbuds did sound pretty good when they worked. Definitely high-quality and approaching, though not quite reaching, the clarity of doubly or..." Read more

    101 customers mention69 positive32 negative

    Customers have mixed opinions about the battery life of the headphones. Some mention that it has a respectable battery life, while others say that it's a bit meh.

    "...Connection is quick with verbal feedback in the buds. Battery life is as expected, and runs easily the 6 or so hours; the case can give another 12-..." Read more

    "...Batter is great. I think it gets about 20 hours with he case. You can check battery by pressing the little button on the back...." Read more

    "...Still, longer battery life would be welcome. The second is the lack of Adptx HD codec. They only support AAC, SBC, and Adptx LL...." Read more

    "...- Battery life is solid at 7 hours default, plus more with the case. Longer than I'd ever have them in for in one setting, anyways.-..." Read more

    95 customers mention31 positive64 negative

    Customers are mixed about the performance of the headphones. Some mention that the battery life is good, the functionality is good and they pair quickly without fail. However, others say that the left ear bud CANNOT work without the right bud, that the app is average and that the right can't turn on no matter how long you hold it.

    "...One thing to not is that the right earbud MUST be out for use while the left one can be put back in the case.Build Quality:..." Read more

    "...This feature is simple and intuitive and is extremely useful...." Read more

    "...The not-as good **- Right ear only for solo stuff - doesn't bother me, and they explicitly tell you this in the instructions, but be..." Read more

    "...First off, the earbuds are not independent--the right earbud is the master and the left is just along for the ride, I guess...." Read more

    66 customers mention41 positive25 negative

    Customers are mixed about the fit of the headphones. Some mention that they are very well built and fit great for them, while others say that they have fitment issues and the earbud itself is quite large. The case is small enough that they can keep it in their tiny purse for walks, but some customers say that the seal wasn't good and the case is a little tall.

    "...When the track calls for bass it is there. Tight, controlled, not boomy or elevated as most headsets are, and very deep...." Read more

    "...ERGONOMICS 4/5: These fit in my ear nicely and are lightweight enough to not feel in my ear...." Read more

    "...The case has no wireless charging ability, oh well. The case is larger than expected, a little heavier than an Airpods Pro case, and due to it's..." Read more

    "...They are very well built and fit great for me. While I don't have the largest ears, I found that the normal size worked the bets...." Read more

    62 customers mention37 positive25 negative

    Customers are mixed about the comfort of the headphones. Some mention that they are relatively comfortable with the factory installed tips, while others say that they're too uncomfortable, clunky, and hurt their ears. The hard shiny plastic is not ergonomic and does nothing to hold them in their ear, and they've become ear-canal sore after extended wearing.

    "...Comfortable enough, though it could be better. The squarish shape isn't the best fitting for ears...." Read more

    "...The buds stick out from your head, and are heavy, so extended wearing became ear-canal sore, but never really painful...." Read more

    "...Crisp sound, great battery life, nice features on the app, comfortable...they are absolutely outstanding...." Read more

    "...reasonably comfortable, I expect to be able to survive long listening sessions- I was able to get a great seal with included tips-..." Read more

    89 customers mention21 positive68 negative

    Customers have connectivity issues with the headphones. They mention that the ear buds randomly stop pairing with their devices, and the lag is still present. They also say that the control app is slow and does not do well for phone calls.

    "...Bluetooth 5.0 connection (they support up to 5.1) on the PC, BT lag is still present; this is really evident watching videos and, to some extent, on..." Read more

    "...Although a bit laggy, the bot was fine if very basic; but when I tried to connect with a live agent to talk about my problem I was unable to find..." Read more

    "...Charging case takes USB-C- Phone calls have almost no lag- NO WIRES OR ADAPTERS!!CONS:-..." Read more

    "...The Smart Control app is alright; it's a bit slow, guys, all I really want is responsive EQ knobs or sliders...." Read more

    Sennheiser disappoints me for the first time
    3 Stars
    Sennheiser disappoints me for the first time
    First let me start off by saying that I bought these buds on a sale for $99 and even that seems too high for theseQuality: the build quality is great they feel like $200 earbuds no problems thereSound: To be totally honest they don’t sound that bad, they do not get very loud at all I have my phone all the way up and sounds like it’s half way. This makes it hard for me to justify the price if I can hear myself speak on full blast and others as well.App/Software: Sennheiser seems to nearly miss in this category every time for me but makes it up with the way their products sound naturally, However I downloaded the software app to change equalizers and it’s almost as if it doesn’t work at all I mess with it and somehow the buds just start sounding like $30 earbuds quite sad really.Battery life: Alright this is where Sennheiser takes the cake they have awesome battery life almost letting me forget they are even wireless.Comfort: These fit quite well and they are good for short periods of time, after awhile though they get to be a bit annoying but pretty solid work thereConclusion: These are absolutely not worth that $199 price tag they have got way too many issues and they just don’t sound all that impressive I’d just get AirPods or something else at this point I will probably not be using these daily because they are just a problem.
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    Top reviews from the United States

    Reviewed in the United States on March 11, 2021
    Color: BlackVerified Purchase
    34 people found this helpful
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    Reviewed in the United States on July 18, 2021
    Color: WhiteVerified Purchase
    5 people found this helpful
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    T
    5.0 out of 5 stars A honest detailed experienced perspective review for helping selectors.
    Reviewed in Canada on February 14, 2021
    Color: BlackVerified Purchase
    39 people found this helpful
    Report
    Cliente de Amazon
    5.0 out of 5 stars Gran sonido, claridad, y comodidad.
    Reviewed in Mexico on December 29, 2020
    Color: BlackVerified Purchase
    Customer image
    Cliente de Amazon
    5.0 out of 5 stars Gran sonido, claridad, y comodidad.
    Reviewed in Mexico on December 29, 2020
    Tengo otras marcas de audífonos true wireless como Amps Air 2.0, Sabbat e12, Sony WF-XB700 y estos Sennheiser son los que mejor sonido tienen.

    El diseño es minimalista y son discretos, a pesar de su tamaño, que no son los más pequeños del mercado. El estuche de carga es de un tamaño muy cómodo para llevar en el bolsillo del pantalón.

    Los cuatro puntos que me encantan de estos Audífonos son:
    La comodidad, la duración de la batería, la conexión sólida con el smartphone, y por supuesto, el sonido.

    Son bastante cómodos, casi no pesan, y te aíslan pasivamente del ruido exterior a pesar de no tener cancelación de ruido activa.

    La batería le dura hasta 7 horas sin interrupción sin tener que recargarlos en el estuche de carga.

    La conexión con el smartphone es super sólida. No he tenido ninguna desconexión o dropout durante la reproducción, aún si te alejas a más de 10 metros.

    El sonido es muy claro, escuchas detalles de los instrumentos que no se escuchan en otros audífonos. La tridimensionalidad del sonido, es decir, el espacio y separación de los instrumentos es impresionante para unos audífonos de este tamaño. Es lo más parecido a unos audífonos de diadema. Se disfrutan mucho viendo películas. Las frecuencias agudas, medias, y graves están presentes cuando los sacas de la caja, solo tienes que descargar la aplicación para personalizar el ecualizador a tu gusto y el preset se guardara en los audífonos. Los agudos son brillantes, los medios muy notables y los graves, créeme, no te decepcionarán, son super claros y profundos.

    No te los recomiendo para hacer deporte porque no tienen certificación contra agua. Si los quieres para este tipo de actividad ve por los Sony WF-XB700 (Que son los que yo uso para esto) o por los Sennheiser Momentum del modelo mas reciente, claro que a un precio más elevado.

    Se pueden emparejar hasta a 8 dispositivos. Solo tienes que abrir la configuración del Bluetooth, seleccionarlos de la lista, y se desconectaran automáticamente del dispositivo anterior.

    En las llamadas, el micrófono no es notable, pero es lo suficientemente bueno para realizar llamadas con el teléfono y te escucharán claramente.

    La aplicación agrega algunos extras como la personalización del sonido, los controles táctiles y las actualizaciones de firmware de los audífonos, que por cierto, tarda un montón.

    En resumen, si buscas como yo unos audífonos para escuchar música o películas sin perder todos los detalles con una gran sonido 3D, estos audífonos son para ti.
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    36 people found this helpful
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    Gil
    5.0 out of 5 stars Buen Sonido
    Reviewed in Spain on March 1, 2021
    Color: BlackVerified Purchase
    Jendricio
    5.0 out of 5 stars Solides Headset mit Top Sound
    Reviewed in Germany on February 11, 2021
    Color: BlackVerified Purchase
    One person found this helpful
    Report
    David LAw
    5.0 out of 5 stars Excellent value
    Reviewed in Singapore on September 10, 2022
    Color: BlackVerified Purchase