I was looking for a headphone with a microsd, because I AM the kind of person that hate run with a cell phone or with a pair of wires dangling. Then I found this headphone and even I wasn't sure if I would like I decided bought it. It was a very nice decision, because when this headphone arrived and I tried I loved it in the same time. Now I can run or make another exercise without worries about my cell phone. Is pretty nice!!!