---
product_id: 226543405
title: "Consumer Audio CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls - with Noise Cancellation and Customizable Touch Controls, White"
brand: "sennheiser"
price: "NT$6032"
currency: TWD
in_stock: true
reviews_count: 8
category: "Sennheiser"
url: https://www.desertcart.tw/products/226543405-consumer-audio-cx-400bt-true-wireless-earbuds-bluetooth-in-ear
store_origin: TW
region: Taiwan
---

# Bluetooth 5.1 with AAC & aptX codec support 7mm dynamic driver for crisp sound 20h total battery life with charging case Consumer Audio CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls - with Noise Cancellation and Customizable Touch Controls, White

**Brand:** sennheiser
**Price:** NT$6032
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your audio game with Sennheiser CX 400BT — where precision meets freedom.

## Quick Answers

- **What is this?** Consumer Audio CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls - with Noise Cancellation and Customizable Touch Controls, White by sennheiser
- **How much does it cost?** NT$6032 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/226543405-consumer-audio-cx-400bt-true-wireless-earbuds-bluetooth-in-ear)

## Best For

- sennheiser enthusiasts

## Why This Product

- Trusted sennheiser brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-day wireless freedom:** Up to 7 hours per charge plus 20 hours total with the sleek charging case keeps your soundtrack going nonstop.
- • **Fast charging for busy pros:** Quick charge 10 minutes for 1 hour playback—perfect for power users always on the move.
- • **Seamless device compatibility:** Bluetooth 5.1 with wide codec support (AAC, aptX, SBC) ensures flawless, high-quality streaming on any smartphone.
- • **Audiophile-grade sound clarity:** Experience pristine, detailed audio with a 7mm dynamic driver and customizable EQ via the Smart Control app.
- • **Tailored fit & intuitive controls:** Ergonomic design with 4 ear tip sizes and fully customizable touch controls for effortless music, calls, and voice assistant access.

## Overview

The Sennheiser CX 400BT True Wireless Earbuds deliver premium sound quality powered by 7mm dynamic drivers and advanced Bluetooth 5.1 connectivity with AAC and aptX codecs. Designed for professionals who demand both style and substance, these earbuds offer up to 7 hours of playback per charge, extended to 20 hours with the compact charging case. Customizable touch controls and a built-in equalizer via the Smart Control app let you tailor your listening experience, while four ear tip sizes ensure a secure, comfortable fit. Fast charging and passive noise isolation make these earbuds an essential companion for on-the-go millennials seeking audiophile-grade sound without compromise.

## 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.

Review: Excellent audio quality - Of all the audio upgrades I have bought in my life, these earphones were the best $100 I have ever spent. There are only two things I wish were improved or included. First is the battery life. They will realistically give 5-6 hours per charge in real world use. This is from full charge to the devices shutting off from low battery. They charge quickly in the case or even faster with the case plugged in. Still, longer battery life would be welcome. The second is the lack of Adptx HD codec. They only support AAC, SBC, and Adptx LL. The audio quality of these earphones warrants the best codecs and I'm surprised that was not included. With that said, there is little to fault in the sound quality. When I first put them in and paired them, they presented the worse sound I have ever heard from earphones. Even airplane throwaways sounded better. Then I remembered reading another comment about the same thing and stating they needed to be broken in. Being familiar with high end audio I figured I would break them in for two charge cycled. I parked them with my phone and streamed Tidal until they went dead, charged up and repeated. When I charged them up and put them on. I was presented some of the best audio I had ever heard from an earphone. The sound was incredibly detailed, accurate but slightly heavy in the high end. Bass sounded thin but very accurate. This turned out to not be the case. I opened the Sennheiser app and reduced the high end by 3db. That was just what was needed and they smoothed out and sounded very detailed but not hard it edgy like before. As for the bass, I did nothing but listen to several tracks I was extremely familiar with. When the track calls for bass it is there. Tight, controlled, not boomy or elevated as most headsets are, and very deep. In other words they deliver what is in the recording, not equalized to sound bass heavy. The more I listened, the more I heard what an incredible sounding ear buds these are. I did not want ANC. I feel it has its place in certain applications like travel, but I only have these to listen to music. The isolation is very good and minimal ambient noise gets in. Even outside or walking with traffic they seal very well. I hear more audio artifacts from noise canceling that bother me than a little bit of ambient noise. After all, if listening to speakers you hear everything anyway, even in a quiet living room. 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, I have only heard a few people afk if I was outside when there was string winds. But all say voice quality is excellent. To get any better audio quality many times more money has to be spent and even in the $400-$500 range I have heard nothing that that is any better sounding. Better than Bose, WAY better than air-pods. This is based on audio quality only. If you MUST have ANC or longer battery life for some reason these will not work for you. If you are looking for unbeatable sound,there is nothing close to these without getting into the over $750 range and up. For $100, these are the audiophile bargain of the year. Will not be sorry if you purchase these.
Review: Incredible sound, Easy to sync, Good customizability and great EQ! Do buy! - Sound quality The sound on these things are phenomenal. Even more so for earbuds at this price range. But hey, its Sennheiser. Also, by using the Sennheiser Smart Control app, you can really make these sound how you want. From high bass, to low treble you can really change a lot. It also has the codecs for many different devices so it will sound great on Apple AND Android devices. 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. Just try not to hit them when scratching your ears! 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: While the case could feel cheap at times as it just made from plastic, its clear to see that money went into the earbuds. 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. They also come with Small, and large size caps. I also recommend twisting the earbuds inwards for a tighter feel. They have stood in during runs, windy bike rides, and vehicles. Battery: 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. green for high, yellow medium, and red for critical meaning you need to charge very soon. I think you can get about 4 charges with the case but I've had these for about a month now and I've only had to charge these things about 4 or 5 times and I use them for hours! Also. charger uses USB C Problems: While I think these earbuds are incredible, I do have some things I think they could add. Given the price range, I think earbuds like these should have some form of a transparency mode. While I think they have the hardware for it, the software does not support it. Honestly, This is the only area I'd say these things were "lacking". Active noise cancelation would be very nice too for the price but sadly, it is not included. It does have passive noise cancelling and honestly, I don't know the difference. Overall: Overall? Awesome product. These things sound nothing short of incredible and they fit and are built very well. They allow for great customization of buttons and EQ. About as easy to put on as any other earbuds. If you are looking for high quality earbuds, these are it.

## 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)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08DCKFPQR |
| Additional Features | Lightweight, Microphone Included, Noise Isolation, Universal Phone Control, Volume Control |
| Age Range Description | Adult |
| Antenna Location | Calling |
| Audio Driver Size | 7 Millimeters |
| Audio Driver Type | Dynamic Driver |
| Battery Average Life | 20 Hours |
| Battery Charge Time | 1.5 Hour |
| Best Sellers Rank | #90,202 in Electronics ( See Top 100 in Electronics ) #4,179 in Earbud & In-Ear Headphones |
| Bluetooth Range | 10 Meters |
| Bluetooth Version | 5.1 |
| Brand | Sennheiser |
| Built-In Media | CX 400BT True Wireless, Charging case, USB-C charging cable, Silicone ear adapter sets (in size XS/S/M/L) |
| Cable Features | Without Cable |
| Carrying Case Battery Average Life | 20 Hours |
| Carrying Case Color | White |
| Carrying Case Weight | 0.42 Ounces |
| Color | White |
| Compatible Devices | Cellphones |
| Connectivity Technology | Bluetooth |
| Control Method | App |
| Control Type | Voice Control |
| Controller Type | Application-based |
| Customer Reviews | 4.1 out of 5 stars 2,589 Reviews |
| Ear Placement | In Ear |
| Earpiece Shape | In Ear |
| Enclosure Material | Silicone |
| Form Factor | In Ear |
| Frequency Range | 5 Hz to 21 kHz |
| Headphone Folding Features | In Ear |
| Headphone Jack | usb |
| Headphones Ear Placement | In Ear |
| Impedance | 36 Ohms |
| Is Autographed | No |
| Item Height | 42.3 millimeters |
| Item Type Name | True wireless earphones |
| Item Weight | 0.42 Ounces |
| Manufacturer | US - Sennheiser |
| Model Name | CX 400BT True Wireless - White |
| Model Number | CX400TW1 White |
| Noise Control | Sound Isolation |
| Number of Items | 1 |
| Number of Power Levels | 1 |
| Specific Uses For Product | Personal |
| Style Name | Modern |
| Subject Character | no character |
| Theme | No Theme |
| UPC | 615104346925 |
| Unit Count | 1.0 Count |
| Warranty Description | 2 year manufacturer |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | Bluetooth |

## Product Details

- **Brand:** Sennheiser
- **Color:** White
- **Ear Placement:** In Ear
- **Form Factor:** In Ear
- **Impedance:** 36 Ohms

## Images

![Consumer Audio CX 400BT True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls - with Noise Cancellation and Customizable Touch Controls, White - Image 1](https://m.media-amazon.com/images/I/41pZjzs4R6L.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: If you only use one earbud dows the other one work if u have the main one on**
A: Thanks for your question. CX 400BT True Wireless earphones deliver stereo audio via their left and right earbuds. However, the user can use the right earbud, which serves as the ‘master’ earbud to establish the connection to the paired Bluetooth device, as a stand-alone unit for phone calls and voice assistant access.
World Wide Stereo is 42 years old and a proud authorized Sennheiser dealer.

**Q: Will these work with my smart tv in place of the sennheiser headet i’m currently using?**
A: If your smart the has blu tooth it should.

**Q: Are these good for taking calls?**
A: They are OK at best for taking calls. There are better options for that but these will work. Sennheiser is more about great sound quality for music.

**Q: How do I find wireless earbuds for my android phone motorola?**
A: These should work fine with your Motorola phone as long as it is a recent enough model to have Bluetooth. Actually, your Motorola phone, if it has Bluetooth will work with just about any wireless earbuds.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent audio quality
*by D***2 on July 18, 2021*

Of all the audio upgrades I have bought in my life, these earphones were the best $100 I have ever spent. There are only two things I wish were improved or included. First is the battery life. They will realistically give 5-6 hours per charge in real world use. This is from full charge to the devices shutting off from low battery. They charge quickly in the case or even faster with the case plugged in. Still, longer battery life would be welcome. The second is the lack of Adptx HD codec. They only support AAC, SBC, and Adptx LL. The audio quality of these earphones warrants the best codecs and I'm surprised that was not included. With that said, there is little to fault in the sound quality. When I first put them in and paired them, they presented the worse sound I have ever heard from earphones. Even airplane throwaways sounded better. Then I remembered reading another comment about the same thing and stating they needed to be broken in. Being familiar with high end audio I figured I would break them in for two charge cycled. I parked them with my phone and streamed Tidal until they went dead, charged up and repeated. When I charged them up and put them on. I was presented some of the best audio I had ever heard from an earphone. The sound was incredibly detailed, accurate but slightly heavy in the high end. Bass sounded thin but very accurate. This turned out to not be the case. I opened the Sennheiser app and reduced the high end by 3db. That was just what was needed and they smoothed out and sounded very detailed but not hard it edgy like before. As for the bass, I did nothing but listen to several tracks I was extremely familiar with. When the track calls for bass it is there. Tight, controlled, not boomy or elevated as most headsets are, and very deep. In other words they deliver what is in the recording, not equalized to sound bass heavy. The more I listened, the more I heard what an incredible sounding ear buds these are. I did not want ANC. I feel it has its place in certain applications like travel, but I only have these to listen to music. The isolation is very good and minimal ambient noise gets in. Even outside or walking with traffic they seal very well. I hear more audio artifacts from noise canceling that bother me than a little bit of ambient noise. After all, if listening to speakers you hear everything anyway, even in a quiet living room. 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, I have only heard a few people afk if I was outside when there was string winds. But all say voice quality is excellent. To get any better audio quality many times more money has to be spent and even in the $400-$500 range I have heard nothing that that is any better sounding. Better than Bose, WAY better than air-pods. This is based on audio quality only. If you MUST have ANC or longer battery life for some reason these will not work for you. If you are looking for unbeatable sound,there is nothing close to these without getting into the over $750 range and up. For $100, these are the audiophile bargain of the year. Will not be sorry if you purchase these.

### ⭐⭐⭐⭐⭐ Incredible sound, Easy to sync, Good customizability and great EQ! Do buy!
*by A***D on May 9, 2021*

Sound quality The sound on these things are phenomenal. Even more so for earbuds at this price range. But hey, its Sennheiser. Also, by using the Sennheiser Smart Control app, you can really make these sound how you want. From high bass, to low treble you can really change a lot. It also has the codecs for many different devices so it will sound great on Apple AND Android devices. 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. Just try not to hit them when scratching your ears! 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: While the case could feel cheap at times as it just made from plastic, its clear to see that money went into the earbuds. 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. They also come with Small, and large size caps. I also recommend twisting the earbuds inwards for a tighter feel. They have stood in during runs, windy bike rides, and vehicles. Battery: 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. green for high, yellow medium, and red for critical meaning you need to charge very soon. I think you can get about 4 charges with the case but I've had these for about a month now and I've only had to charge these things about 4 or 5 times and I use them for hours! Also. charger uses USB C Problems: While I think these earbuds are incredible, I do have some things I think they could add. Given the price range, I think earbuds like these should have some form of a transparency mode. While I think they have the hardware for it, the software does not support it. Honestly, This is the only area I'd say these things were "lacking". Active noise cancelation would be very nice too for the price but sadly, it is not included. It does have passive noise cancelling and honestly, I don't know the difference. Overall: Overall? Awesome product. These things sound nothing short of incredible and they fit and are built very well. They allow for great customization of buttons and EQ. About as easy to put on as any other earbuds. If you are looking for high quality earbuds, these are it.

### ⭐⭐⭐⭐ Great Sound, Battery Life, Secure Fit, Comfortable, No Noise Cancellation
*by B***S on March 16, 2021*

I'll be comparing three different pairs of headphones, as any one of them would have top marks by themselves, and my review would be meaningless; With this price point they had better be decent headphones. The headphones I'll be comparing are: Apple AirPods Pro (referred to as "Air" from here on), Sennheiser CX 400BT (referred to as "CX" from here on), and Sennheiser Momentum True Wireless 2 (referred to as "MO" from here on). Moving on. *Sound* All 3 sound great, but the MO was the clear winner, giving the most true-to-life sound, including all of the subtle highs and lows. The Air was a not-too-far-off second; it lacked some depth in the high notes. The CX wasn’t too far behind the Air; it had better sound, however, it had significant issues stemming from noise cancellation, see below. *Noise Cancellation* The Air definitely has the best noise cancellation, for me; it isn’t especially awesome, but it’s adequate for most situations. It’s probably about as good as you can expect in this price range, but cannot compare to over-ear headphones. The MO wasn’t too terribly far behind, and may even have better noise cancellation, but due to fitment issues, below, the seal wasn’t good enough to cancel out most of the noises around me. The CX has no noise cancellation. I didn’t realize how big of an issue this would be, but when I actually manage a decent seal on the ear buds, I can hear my own breathing (not a mouth-breather, by the way!) almost as loud as my music. This was the deal-killer for me. Otherwise the CX would be on par with the others, and at half the price. *Fitment* Both of the Sennheisers fit identically, and are a better fit, in that they actually stay in my ears. However, as stated above, the actual buds don’t fit my ears; I seem to be right between the small and medium buds. The Sennheisers kind of twist into your ear, and hold similar to a sport headphone, which is nice, but also a nuisance. The Air’s buds are a much better fit, but they don’t stay in my ears at all; The slightest movement and they fall out. I bought some “ear hooks” for them, and they stay in my ears perfectly, now. However, the ear hooks add just a hair of silicone to the exterior of the headphones, which caused me discomfort after a few hours (Note: this has nothing to do with the actual headphones). *Battery* I want to say the Sennheisers’ battery lasted way longer than the Airs (a full work day). That said, I did not pay attention to how long it took them to recharge in their case. The Airs seem to only last 6-8 hours (I should mention I have long work days, haha), but I watched their battery level for a couple minutes the first time I charged them, and they were charging about 1% per 10-15 seconds. Assuming it actually keeps that pace, that’s a full charge within 16-24 minutes, which seems pretty good to me. One charge drained the Air’s case by 20%, so you get 5 charges out of it. Unfortunately, I don’t recall most of this stuff with the Sennheisers. *Technology* I’d say that none of them stand out as being better here, just different. The Sennheisers might have a slight upper hand, as they have more controls available to them, but some of them make no sense to me, and there’s no way to reprogram them (as far as I can tell. It may be possible via their app, but I imagine this is specific to the device, and I want them to work the same on all devices. Also, both Sennheisers have issues with the fact that all controls are right on the face of the headphone, and it’s almost impossible to put them in your ears without touching the face. The Airs CAN’T CONTROL VOLUME! For real?! You have to control it from your phone/listening device. This absolutely drives me nuts (at least 20 times a day). The Airs actually has a button on the stem that you have to push for all of the controls. I was under the impression it felt seamless, similar to a touchscreen; Not the case. Lastly, based on their product description and reviews, it seemed that the Airs can only connect to Apple products, but based on their incredibly short manual, it would appear that it can indeed connect to any bluetooth device (unfortunately all I own are Apple products, so I can’t verify this). All 3 headphones pause your music when you take them out, which is nice. I sure wish I could turn them off (without putting them in their case), but none of them allow this. *Summary* For myself, I opted to return the Sennheisers, and plan to stick with the Air. The Sennheisers had more significant issues involving fit and noise cancellation, and the Air has more significant issues with the interface (no volume control), and don’t stay in your ears without outside assistance via ear hooks.

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-23*