Don?t even know how to charge it or anything. The sonic experience of these 2 in stereo at 75% volume from 6 feet away is awe inspiring and you feel like they are too loud and your are going to get in trouble with the neighbors (also so loud I might be hurting my hearing). I dont get it, every review with more than 1 star must be a paid review. Very pleased with this one which was easy to set up and to use. With that out of the way lets get into what I like about this headset. You start every screw by hand (wood or metal) to make sure it is in the hole and not out of alignment. These footies/slippers get a lot of comments. It was easy to use, and I was able to fit all my brushes in the various brush collars that this comes with. I bought these for my wife to use on recent 14-hour flights to and from China. The Audio-Technica BPHS1 Broadcast Series Broadcast Stereo Headset (this product, £180)2.