It's great to have your music with you everywhere you go, but once in a while, you need to communicate with others. Don't go through the trouble of pulling out your earphones and fussing with putting them back. Shure's Push-To-Hear (PTH) accessory package brings all Shure SE and E Series earphone owners the convenience to alternate between their music and quick connection to the outside world. This is the same technology used with the incredibly popular se530PTH Shure earphone. This optional accessory works with all Shure SE and E Series models and is also compatible with other brands of earphones. Included with your purchase are PTH Control Switch, VoicePort Microphone, 9 in. cable, 3 ft. cable.