I don't normally write reviews but I've enjoyed these headphones so much that I felt it necessary. First of all I'm a bit of an audiophile and it takes quite a bit to impress me as far as speakers and headphones. I had gotten rather tired of corded headphones so I started looking into wireless. Initially I was leaning towards the Bose Soundsports (yes I know Bose is usually overpriced) but I was familiar with Bose products so I started there. I read a lot of bad reviews on the Soundsports which put me off, then the final nail in the coffin was the bulky size of them. I noticed during my research that the Jaybird X3's kept popping up, but I had never heard of Jaybird so that concerned me. Well I read a ton of amazon reviews and watched some youtube review videos and was decided to give them a shot. I ordered the X3's on amazon with free 1 day delivery. When I got them the next day the first thing I noticed was how nice the box was, you can tell Jaybird put some time and money into it. Once I got them out I was impressed with how they were built and felt, they just seem to have that expensive feel. I then fiddled around with the different earbud attachment configurations, I opted for the medium ear fin with the small isolation foam tips. The earphones bluetooth paired easily and effortlessly with my iPhone 6S and I began to listen to some different music. I wasn't really expecting anything great with any type of bluetooth headphones and when I first put these on I thought the sound was decent but not anything amazing. However once I downloaded the Jaybird MySound app and began to readjust the equalizer these headphones came alive (Oh and they get plenty loud if you’re wondering) I was really impressed with the sound, I could even make custom presets for any type of music or audio situation. The app also comes with some pre configured presets, however I was not impressed with these and I'm not sure how they made it on there. Now I will not say that these are better than most high quality wired earbuds, and I was not expecting them to be, but for what they are the sound is amazing and has exceeded by expectations. With a little adjusting in the MySound equalizer the highs are nice crisp, the mids are good and the bass response is pretty solid although maybe lacking just a tad in the very lowest frequency range. They fit in my ear snug and don't move even during rigorous exercise (I do a lot of running and weights). The battery life is amazing, I got every bit of the 8 hours that Jaybird advertises. Compare that to the Bose Soundsports that advertise 6 hours (which in many reviews wouldn't even get that). I will admit though that the charging cable that came with the X3's seems a bit odd, and it doesn't come with an actual wall plug only the USB connection. It wasn't a big deal for me cause I have plenty of USB wall plugs. I would say if your thinking about buying the Jaybird X3's go ahead and do it, just realize that they are not wired headphones and the sound quality will not be the same but for what they are the sound quality is amazing and has exceeded my expectations.