Customer Ratings & Reviews

what absolute crap. these things were babied from day one and like many others report: the right channel stops playing audio. It's like there is a timer starts once these things hit air to make them self destruct exactly one month after the warranty expires.

The Sennheiser CX 400 BT Wireless Earbuds work fine. I have paired them quickly and easily with several different devices (phone, tablet, Chromebook, and MacBook) without problems. It’s nice to not be tethered to devices with a cord and I can walk into other rooms without bringing the audio player with me which is convenient. The earbuds and charging cradle are small and very portable. The battery charge will last me pretty much all day with frequent but not necessarily constant use . However, the sound quality is only adequate. The sound is mostly on the treble end, almost tinny. This can somewhat be improved using an equalizer to boost the bass end, if your audio player has one. Sennheiser does have their own proprietary control app for iOS and Android (but it does require a license agreement and collects your usage data, which I don’t care for). For the most part, they are comfortable to wear, even for long periods. They come with 4 different sized ear adapters to choose from and get a good fit. Overall, I would say that they work fine, but I’m not in love with them.

So overall, these are very good headphones. but as with most ear-bud style, and especially wireless ones... the shape/size of your ear is going to be a big factor. Sound quality is excellent. Very clear, deeper tones that I original suspected. Extremely easy to connect to a phone or other device (just a takes a few seconds, using standard bluetooth connectivity means) The charging case is nice and provides a very convent way to store and charge the Earbuds. The problem we had, is that for my ear... worked perfectly fine, I could do a workout on my Peloton with it, and just use them as expected. My wife on the other hand... she changed the inserts to the smaller size for her ears, and could put them on and they worked. but what she was finding that the size of the unit, it just didn't sit well in her ear, and they would fall out. She used them while cutting the lawn (electric mower), and had to catch one of them a couple times.

they worked fine in the begining but after a month of use they just stopped working. No sound at all but the touch controls still worked

I’ll start this by saying these sound great and the best bang for your buck then the MTW 2 if you’re talking only about sound quality. These have the same drivers as those but at $100 less. Of course these lose some features and quality but it’s still great. Inside the Box you’ll get: The case with the earbuds Small, medium ( already on the buds) and large ear tips USB A to USB type C for charging Manuals and etc I want to start off and say I would usually dock a point for the fact the case feels kind of cheap, no multi point connection and the fact it uses a master and slave setup where the right bud connects to your phone and the left pairs to the right but these sound soooooo good that I’ll let it slide. These are basically like the MTW 2 but lacks the case quality, no ANC and less battery life on the case and buds but for $100 less it’s fine considering the SQ is just as good. You get 7 hours on the buds and 13 hours from the case. You get an app to customize the EQ which thankfully now has better control options to control it with levers vs that wave thing they have been using which is still available if you prefer it. The app also allows you to change the touch controls as well.

Three months. They lasted three months till the left one stopped working. Nothing else needs to be said.

Left Earbud going in and out, 7 days out of one month return. For the price point, I expected ALOT more!

they stop charging not even before a years of use.........

Horrible. Left side quit working after only one week. Very disappointed.

Bad fit in ear , subpar audio quality , and keeps falling off .