I bought these headphones for working out, based on the fact that they are advertised as "sweat resistant." However, I've had the on-headphones controls short out twice on these phones. Both times, the volume control began to spontaneously decrease the volume in the middle of a workout, and the button to advance to the next track ceased working entirely. They sound quite good when they're functioning and the mike works very well in phone mode. They also are somewhat uncomfortable. I would not recommend these to anyone who wants to wear them while exercising.