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Sennheiser

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

    • Based on 2,318 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, May 15
Order within 10 hours and 23 seconds
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Color: White


Features

  • 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)

Description

SENNHEISER CX 400BT True Wireless EarbudsThese 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 controlsWireless headphones from SENNHEISERSENNHEISER 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.SENNHEISERShaping 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.


Product Dimensions: 2.32 x 1.33 x 1.67 inches


Item Weight: 0.42 ounces


Item model number: CX400TW1 White


Batteries: 1 Lithium Polymer batteries required. (included)


Is Discontinued By Manufacturer: Yes


Date First Available: September 1, 2020


Manufacturer: Sennheiser


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great "normal" true wireless earphones
Color: Black
Summary: Better sound quality than most, cheaper than the top-of-the-line active noise cancelling sets, and consistent connectivity. My background - former recording engineer/musician, so my other set of earphones are quad-driver custom molded in-ears. I'm not expecting that level of quality from a set of $2-300 wireless units, but I don't put up with bad sound quality and I like relatively flat response. I've previously tried the Jabra 75t's and other, less expensive units, couldn't deal with the sound quality and dropouts. I'm not a fan of hugely stilted EQ (the Jabras in particular had bass that was incredibly overpowering in a bad way). ** The good ** - Sound quality is great for a set of $200 earphones. EQ adjustment was minimal to get them in the 'sweet spot' where I could hear everything. Highs and transients could be a bit smoother, but everything is there and you can pull the things you want up/down vs just having to correct for massive problems. Soundstage is impressive for something this small and (relatively) inexpensive. - Connectivity is miles better than I've had before. I used to get dropouts riding my bike on other units (3 foot connection distance), and with these I can walk across the room and there's no issue. Time will tell if this holds for other use cases, but so far so good! - 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. - USB C charger. Love USB C and use it for most of my other devices, so this is handy. - The Android/iOS app is great and easy to use. Relatively easy setting it up/getting it connected. ** 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 aware of it if you're a left-ear only type person. - No ANC - I didn't want active noise cancellation, so up to you if you want it or not. The ANC version the Sennheiser makes is $100 more, so up to you. - Slightly wonky firmware updates that take 45 minutes. Hopefully won't have to do this often, so not a big deal to me. Overall, I'm very happy with these - I'd been waiting to see if they'd release a version cheaper than the Momentum Wireless 2's, and this has answered my request! I'll update this review if anything goes haywire down the road, but so far these seem like a keeper. ... show more
Reviewed in the United States on September 21, 2020 by cb
    • Excellent sound in a basic, no-frills package
Color: Black
Best sounding earbuds I've used. Wide, really wide, soundstage, great detail, solid, clean bass. Smooth, satisfying mids. The controls are well designed and pairing was easy. Touch earbud touchpad for 3 seconds and it says "pairing" so you know it's pairing. No putting it back into the case and taking them out again multiple times to get them to pair again like with some earbuds. Comfortable enough, though it could be better. The squarish shape isn't the best fitting for ears. Would've liked to see the case have 4 LEDs for power level instead of a single LED with multiple colors. With such a tiny LED, the color is not that easy to make out. Even cheap $30 BT earbuds have multiple LEDs so I'm not sure why Sennheiser couldn't have them here too. The Sennheiser Smart Control app is easy to use and works well. It allows you to tweak the EQ, see the battery level of the earbuds and update firmware of the earbuds. The overall package (the case, the earbuds exterior, the box it came in) is very basic. If you're looking for something fancy and nice looking to impress your friends, these will not. The earbuds themselves are not sexy looking or stylish or flush fitting in your ear, they are on the bigger side and stick out of your ears a bit. If you're vain and care about that, then these are probably not for you. No ANC, obviously, or ambient sound pass through so if those features are requirements, you should look elsewhere. No sweat/water resistance either, so not so good for working out or using in the rain. But if you don't want yet another muddled, overly bass-boosted, small soundstage TWS, if really excellent sound quality is way up there in importance and you're looking for a convenient, highly portable way to really enjoy your music listening experience for a not-cheap-but-not-super-expensive-either price, these fit the bill very nicely. ... show more
Reviewed in the United States on October 11, 2020 by Kindle Customer
    • Bad unpackaging, but happy ending
Color: Black
I don't normally write reviews after only having the product for less than 2 hours, but these buds compelled me. Out of the box, they didn't sound like what I expected. Especially after all of the positive reviews At first it seemed like my JBLs would surpass the sound quality of these, but these just needed time to break in. The firmware update was awkward, both in time to execute plus tying up the phone (couldn't use it to work out with another set of buds) At this point I was hoping the update would improve the sound quality, what I expect from this brand - and it did. Took a while, along with a break in period, perhaps 6-12 hours. After this period, these have proven to be much more detailed than expected. The app is really what makes this purchase more than worth the money. They did a great job on it. I found myself customizing every song! And it was fun. So I came back to update this this review to give them the kudos they deserve, about 4.5 stars, rounded up. ... show more
Reviewed in the United States on November 25, 2020 by East coast buyer
    • Stay away product doesn’t work with app
Color: Black
Pro’s fit excellent , nice case Cons sound horrible , Sennheiser App won’t connect with CX 400BT , volume extremely low no bass , takes 2 minutes connect when earbuds out of case , I bought earbuds so use equalizer and app but each time app search’s for device can’t find Sennheiser CX 400BT. Not worth $199 , I purchase jbl live 300 sound 100% better I’m sorry Sennheiser But not for me too many connection issues ,specially earbuds don’t work with App. The sound horrible ... show more
Reviewed in the United States on October 31, 2020 by Mlvky
    • Really, really, really good
Color: Black
I worried about buying another Sennheiser because the bass hasn’t been there even though everything else is perfect. The sound here is perfection. Plenty (even overwhelming bass) if you ask for it in the app, and the amazing Sennheiser detail across the rest of the spectrum. That’s all you get though. Amazing sound. These should be priced around $150 considering the complete lack of features compared to the competition in this price range. ANC is pointless marketing, but hear through (transparency) should have been included. If you buy these things to enjoy music though, you can’t go wrong. ... show more
Reviewed in the United States on October 28, 2020 by jbn17

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