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nb__ 14K Views
Aug 31, 2021 10:31 PM

Sennheiser CX-400BT TWS Earbuds (BT 5.1, APT-X) for $89.99 + Free Shipping with Prime

$90

$200

55% off
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Great pair of TWS earbuds!
Amazon link [amazon.com]
Same price on Walmart (just on the white color): Walmart link [walmart.com]

From Product description:
+ 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

My thoughts
I got these last year at $129 before tax - excellent sound quality and clear calls - use them for work meetings and folks hear me loud and clear!
Subjectively, these are also the most comfortable ones from the many I've tried and returned (galaxy buds plus, galaxy buds live, Bose sport earbuds, jabras)

Couple of things to note -
Pros
Has equalizer within app
Wide codec support
USB-C charging
Usable touch controls
Solid connection

Cons
No multipoint, but switching devices has been pretty easy with app. (The product page does say multipoint is available, but I've had trouble with this and I stuck to using the app for this)
No transparency mode, won't recommend for biking/running therefore
No ANC (but good noise isolation)
No IP or IPX rating of any kind (thanks @GimmeYoTots)

https://smile.amazon.com/gp/produ...8&th=1
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Great pair of TWS earbuds!
Amazon link [amazon.com]
Same price on Walmart (just on the white color): Walmart link [walmart.com]

From Product description:
+ 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

My thoughts
I got these last year at $129 before tax - excellent sound quality and clear calls - use them for work meetings and folks hear me loud and clear!
Subjectively, these are also the most comfortable ones from the many I've tried and returned (galaxy buds plus, galaxy buds live, Bose sport earbuds, jabras)

Couple of things to note -
Pros
Has equalizer within app
Wide codec support
USB-C charging
Usable touch controls
Solid connection

Cons
No multipoint, but switching devices has been pretty easy with app. (The product page does say multipoint is available, but I've had trouble with this and I stuck to using the app for this)
No transparency mode, won't recommend for biking/running therefore
No ANC (but good noise isolation)
No IP or IPX rating of any kind (thanks @GimmeYoTots)

https://smile.amazon.com/gp/produ...8&th=1

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27 Comments

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Aug 31, 2021 11:46 PM
346 Comments
Joined Nov 2011
YadooAug 31, 2021 11:46 PM
346 Comments
Price just dropped to $90 this week. Sound Guys give these a higher rating than the CX and Momentum 2. At this price, they are a steal if your main priority is sound. I have them. They have no bells and whistles outside of a so-so app, but the sound is incredible!
Last edited by Yadoo August 31, 2021 at 05:51 PM.
Aug 31, 2021 11:56 PM
1.6K Comments
Joined Oct 2013
irrationalconsumerAug 31, 2021 11:56 PM
1.6K Comments
Holy 20 hrs per charge? Thats crazy
2
Sep 1, 2021 12:05 AM
21 Comments
Joined Apr 2015

This comment has been rated as unhelpful by Slickdeals users.

Original Poster
Sep 1, 2021 12:17 AM
21 Comments
Joined Apr 2015
nb__
Original Poster
Sep 1, 2021 12:17 AM
21 Comments
Quote from irrationalconsumer View quoted comment :
Holy 20 hrs per charge? Thats crazy
Just to be clear, 20 hours is including the case. Here's some more detail from Sennheiser's product description page (link [sennheiser.com])
Quote :
7 hours on a single charge and a further 13 hours with the small, sleek and compact charging case.
Sep 1, 2021 12:30 AM
11 Comments
Joined Jul 2019
TtmgooseSep 1, 2021 12:30 AM
11 Comments
Can you use one earbud at a time?
Sep 1, 2021 12:32 AM
21 Comments
Joined Jun 2020
ColdBeer7Sep 1, 2021 12:32 AM
21 Comments
I'm curious if anyone has tried these while wearing ear protection. Do they stick out from the ear to prevent from wearing over-ear protection while using?
Original Poster
Sep 1, 2021 12:39 AM
21 Comments
Joined Apr 2015
nb__
Original Poster
Sep 1, 2021 12:39 AM
21 Comments
Quote from Ttmgoose View quoted comment :
Can you use one earbud at a time?
Only the right bud can be used standalone

From product page
Can I use one single earbud as a stand-alone device?
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.

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Sep 1, 2021 12:40 AM
105 Comments
Joined May 2012
pabuchokSep 1, 2021 12:40 AM
105 Comments
Quote from ColdBeer7 View quoted comment :
I'm curious if anyone has tried these while wearing ear protection. Do they stick out from the ear to prevent from wearing over-ear protection while using?
I don't own these but they look similar in size to other ear buds I own. Every week I have the ear buds with ears over them when mowing and weed wacking, no issues.
Sep 1, 2021 12:49 AM
346 Comments
Joined Nov 2011
YadooSep 1, 2021 12:49 AM
346 Comments
Quote from Ttmgoose View quoted comment :
Can you use one earbud at a time?
Only the right.
Original Poster
Sep 1, 2021 12:55 AM
21 Comments
Joined Apr 2015
nb__
Original Poster
Sep 1, 2021 12:55 AM
21 Comments
Quote from ColdBeer7 View quoted comment :
I'm curious if anyone has tried these while wearing ear protection. Do they stick out from the ear to prevent from wearing over-ear protection while using?
Haven't tried with any form of ear protection but they do stick out a little bit. Check out this youtube review - that's the first thing he talks about https://www.youtube.com/watch?v=2a1huHNnyfA
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This user is an Expert in Home & Home Improvement
Sep 1, 2021 1:06 AM
5.5K Comments
Joined Feb 2019
GimmeYoTotsSep 1, 2021 1:06 AM
Pro
Expert
This user is an Expert in Home & Home Improvement
5.5K Comments

Our community has rated this post as helpful. If you agree, why not thank

Seems like a solid deal, gave it a TU... but, OP, in the neg column you might want to add - No ANC (at $200 retail it's kinda expected), and No IP or IPX rating of any kind... so beware if using outside (in even light rain) for sports or running.
1
Sep 1, 2021 1:09 AM
129 Comments
Joined Jan 2018
NomoredealSep 1, 2021 1:09 AM
129 Comments
Quote from nb__ View quoted comment :
Only the right bud can be used standalone

From product page
Can I use one single earbud as a stand-alone device?
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.
This is a major deal breaker for me. Lot of hassle with this, specially for long duration calls
Original Poster
Sep 1, 2021 1:19 AM
21 Comments
Joined Apr 2015
nb__
Original Poster
Sep 1, 2021 1:19 AM
21 Comments
Quote from GimmeYoTots View quoted comment :
Seems like a solid deal, gave it a TU... but, OP, in the neg column you might want to add - No ANC (at $200 retail it's kinda expected), and No IP or IPX rating of any kind... so beware if using outside (in even light rain) for sports or running.
Added! Thanks for the suggestion Smilie
1
Sep 1, 2021 1:22 AM
11 Comments
Joined Jul 2019
TtmgooseSep 1, 2021 1:22 AM
11 Comments
Quote from nb__ View quoted comment :
Only the right bud can be used standalone

From product page
Can I use one single earbud as a stand-alone device?
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.
Thank you!

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Sep 1, 2021 1:30 AM
507 Comments
Joined Jan 2008
blueis300Sep 1, 2021 1:30 AM
507 Comments
I personally prefer CX over CX 400BT.
CX came out less than 2 months ago. It has better features like you can use each ear bud independently, also comes with IPX rating, 2 hours longer battery life at 9 hours, and CX has better bass control than the 400BT with more woomp.
Thus I love CX for my workout with more enjoyable sound with water proof which CX 400BT is lacking.

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