I also use them in my woodworking shop so Ill keep them on for hours at a time. Easy to wear and much more attractive than the Apple Q-tips. These have a physical button on the top of each unit (see photo). I would definitely buy this brand again! I guess that makes them a little tougher? Also, we now have about 5 pairs of the same size shoes for our 17 month old daughter. However, the new set came and the same thing happened, just not to the same degree. However, Im glad it has to be plugged up or Id be packing it up everywhere I went. The stock photo really doesnt do it justice. The seller?s service is also good, sending a lot of lossless music. No more clutter!