If you require loud sound, these wont work for you.
Backbynoon, B&H Photo
28 October 2015
Excerpt: I purhcased for my wife. When I was testing, the sound quality was good except the volume was very limited. Im using on an I-Pod. If you're in a quiet setting, will work fine. If there is outside noise, get regular (over the ear) headphones.
Decent sound when not disconnecting or falling out of my ears
WHK "Kookanusa", Amazon
2 June 2015
Summary: I'm returning these after a week of unrelenting aggravation. First, as others have mentioned, the earcups don't fit well. I bought on the recommendation of another reviewer, the Comply earbuds. While they improved the fit in one ear, they did not improve the fit in the other.
Summary: Very good and function Bluetooth earphones. Pairs and works well with my Nexus 5 and Nexus 7. I use it over the ear and it's comfortable and I have used it for over 4 hours without any problems.
They look simple which is a plus however they are ...
26 January 2015
Summary: They look simple which is a plus however they are tricky to keep in eat and took a while to play around with the wings to get them to fit also the sound is clear and crisp but no bass so sounds are very flat
Headphones are nice. There isn't much bass but that was already ...
Amarprit Malhotra, Amazon
14 December 2014
Summary: Headphones are nice. There isn't much bass but that was already mentioned in the product description. The only thing that bothers me is that every now and then the sound breaks out. Sometimes more than other times. My phone is never more than 1-2 feet away from me.
Unfortunately the fit was no better than any other earbuds
Richard Yelland, Amazon
29 November 2014
Summary: Let me start by saying that I have a hard time keeping earbuds in my ears however after reading so many positive reviews for these jaybirds I decided to give them a try. Unfortunately the fit was no better than any other earbuds.
Summary: I actually bought these and returned them but I'm still rating these as "okay" because there are some features that are nice. Pros: Sweatproof! They stay put even when you're running around. Like the option of wearing over ear or under ear. Design is very nice.
Probably best Bluetooth earbuds, but far from 'Plug&Play'
29 October 2014
Summary: I'd say the audio quality is 2nd best of all the ear buds I've used in my life. And these are wireless. And definitely not that much worse, in fact, the difference in quality to those I'd rate best is so small, Bluebuds X take the spot as my favorite headphones ever.
Summary: The fit isnt as great as it could be, I often find the earbuds falling out of my ear with all earpiece sizes. The mic is pretty quiet and useless for using voice commands on phones. Otherwise the minimalist design is great for sports and is out of the way when weight lifting.