Left earbud stopped functioning as intended less thanca month later
927968
Earphones worked great for a bit. Sound quality wasn't bad at all, and regardless of it not having a mic, they worked. Unfortunately, not even a month later, the left earbud gradually got lower and lower (which aren't labeled, but Red=Right and Blue=Left) compared to the right. I've tried setting the audio settings on my phone to make the left one sound louder to try and counteract it, but it was too low to even work with. Luckily, I'm able to return these in time. I wouldn't recommend them due to the fact that I can go to Wal-Mart and buy $20 ones that last much longer (Not a good thing).
3496791
One of the earbuds stopped working and will not create sound anymore. Not happy and will not buy this again!! I'd recommend you get a different brand.

Update 7/31/17: the manufacturer sent me a free replacement copy due to my previous experience. So far this item is working pretty well. It remains to be seen the longevity of this item though and I will update my review again should there be any more problems.

Update #2: 3/22/18: Just as it seems to be designed one of the earbuds have STOPPED WORKING AGAIN!! I am sticking with my original recommendation that you AVOID THIS PRODUCT because IT IS JUNK!! Other reviews will state that one earbud fails with time. Apparently, it is either planned obsolescence or cheap, and faulty, design. Whatever the reason avoid this piece of trash!!
3384242
i got these about a month ago, from here, to use at work. im a maintenance worker so im always moving around and they worked great for a month, the sound was great off my sansa clip plus, untill this morning. I was mopping and i went to look up and next thing there was no sound to the right earbud. i wiggled the bud around and no sound. im thinking to my self these were great little earbuds but they broke after one month.
  like i said before the sound coming out of them was supurb , u could hear  all instruments clearly, they wernt fighting each other to be heard, just good.
 Do i email the company or go through the customer support? i really want another pair of these, i was jus thinking to myself ,man i should get another pair, just in case.
4281879
left earphone stopped working after two months. As per Return policy you cannot return to Amazon or the seller
1878315
After 5 days the right earbud stopped working :-(
508100
Left earbud went to about 10% audio volume in the first week, seems to be a common thread in these.  Right earbud works fine. Definitely not worth $40
3424829
I bought these as a replacement for earbuds I received with my MP3 player (not an Apple product). I experienced the same thing as one of the reviewers below - after continuous use, the left earbud went dead. "No more sound output. Manipulating the wire would sometimes bring back the sound but the wires were clearly broken... I would be much happier if they lasted a bit longer." Granted, I had mine for about a year before that happened, but it was also the left earbud with me and as a lefty, I found this very annoying!! I was quite content with my earbuds up till that point, and had been considering replacing them with the black version for vanity reasons -- the white ones were getting dirty and I just prefer black ones overall (they weren't available when I first shopped for these). If I am guaranteed at least two years' use out of a pair of black ones, I would gladly repurchase these.
496539
Left earbud went bad after about 2 months of moderate daily usage.. Sounds comes back if I mess with the cord where it connects from the mic/remote towards the 3.5mm jack. Would not buy again.
3711803
I purchased these earbuds in July 2016. I loved them. The sound was great, the battery life was significantly better than other models I looked at, and the price is fantastic.

Then, about 4 months in, the left earbud stopped working. So that was that. Needless to say, I'm really disappointed. So...buyer beware, I guess.
3250879
Had these for nearly 2 months now, and had some issues at the start where they weren't playing from my Iphone but that might not have been the headphones fault, but rather the phone. However, the left earbud has stopped working for no apparent reason now, and does not work on any device.
3099283
They sound and work great for the first 4 months. Then the left ear bud stopped working. I have two pairs and the same thing happened to both. I have email company and no one has replied! I will complain next to bbb
2477994
These arrived on 5/28 and as of this morning 7/8 the sound is only coming through one earbud. I played audiobooks, watched Netflix, and listened to music and the right side provides no sound.
4829116
They were good headphones but its only probably been a month and Left ear bud no longer works. Might just be a fluke on mine though.
2584076
Purchased two less than a month ago, one for myself and another for a friend. Sound quality is great for the price, exactly what you'd expect for Sennheisers. However, after about a week or two of light use, my left ear bud stopped working while my friend's is perfectly fine. I'm hoping that this is simply a defective product because I'd like another pair.
2296405
This worked fine for about two weeks. It did what I expected - was a reasonable sound quality headset I could use on jogs. But the left earbud inexplicably died after about two weeks in. Now it only works in the right earbud. Everything else is fine (battery, connectivity), just the earbud is dead. :-(
2178333
I honestly used it for literally a week and the left earphone stopped working! :/

I don't know what's wrong, but I hope to get a replacement!
797263
The left earbud doesn't work properly.  It often cuts out and then it is very difficult to get it working again.