Shure E500PTH Sound Isolating Earphones Triple Hi-Definition Drivers - 1 tweeter, 2 woofers Sound isolation prevents outside noise from interfering with the music, and creates a quiet space for exceptional audio clarity Push to Hear (PTH) control activates a VoicePort  Microphone allowing outside conversation without having to remove your earphones Over-the-ear design keeps cables out of the way Premium accessory kit included