I purchase these headphone to replace the stock iPhone headphone . after a year or so , the pause , skip and volume control fail , which I believe be due to perspiration . I decide to try these out with the anticipation that over time , the control would also fail eventually . I do not expect that to happen after a single very short run . if you plan on use these while work out and you perspire even minimally , I can not recommend these . if , on the other hand , you use they while not work out -- they be a good option .