These headphones have good (but not great) sound quality and battery life. Sadly, even after a couple of weeks, I just couldn't get used to the pressure that ANC puts on my inner ear. It was leaving me with headaches and even sinus pain. So, a good product, but not suitable for me. I didn't need ANC. I also was unable to get these to work with Skype. I could hear audio, but the mic component didn't work with my PC, no matter what settings I tried of forums I read...no joy. I bought a pair of KZ ZS10 Pro IEMs after these and was blown away by the level of detail and clarity compared to the QC35's (and a pair of Jabra Elite 75t's that I also returned). I'm hearing things in recordings I've listened to 100's of times and never noticed before. I would have liked a wireless setup with the battery life of the QC's, but there's always a compromise.