I bought this item for my BlackJack 2 primarily to listen to my music, watch videos, etc. I brought it with me on my drive to Vermont which was about 5-6 hours. After 5-6 hours wearing it, my ears did begin to hurt a bit after I removed it. This item does not have any volume adjustment. he sound quality was fine, no complaints. I had a call come in and I heard the other party fine. Unfortunately, the earbud wire length had different sizes one was really close to the ear and the mic is directly to your mouth which is fine and the other earbud wire was pretty long so the long wire sorta hangs on my face since I don't have a really wide face. It doesn't really bother me but I wish they constructed that better so it would look fine.