These are great, but have some huge caveats that are simply unacceptable for such an expensive and premium product. The worst part is these are the second generation and suffer the same issues as the first. Like many others I ran into the issue of volume decreasing to the point of unusability. This happens because of an annoying design flaw. If anything gets on the mesh opening of the ear pieces, sound quality and volume suffer dramatically to the point of unusability as I said earlier. Keeping them spotless is simply impossible, so it happens constantly especially if you have oily ears. I had to take them out, remove the rubber ear piece and clean them every hour or so. It's ridiculous. I've never had this problem with any headphones I've ever had. So why 3 stars rather than fewer? After some digging I found that removing the mesh and the white filter underneath, which is the main culprit because it's sticky with adhesive and collects debris causing blockage, makes these things a dream. It solves this issue completely, though you'll need to be mindful not to let them get too dirty since there's no longer a filter over the opening. Great sound and clarity, very easy to use app with equalizer controls and ambient sound volume, not to mention 4 gigs of storage built in. They're comfortable and small and the charging case is really nice and portable. Overall they are fantastic and not short on features, but the glaring flaw Samsung failed to address in the older model is very frustrating. It's enough for me to drop them 2 stars even though I love them. I shouldn't have to diy fix an issue on $150+ headphones. Shame on Samsung for not fixing this after all the complaints in the last iteration.