Etymotic Research ER7-MC3-BLACK-I-A MC3 Noise Isolating In-Ear Headset and Earphones for iPad, iPhone, iPod Touch - Black Made for Apple iPod, iPhone and iPad(TM) control functionality 3-button micro-control pod with close-proximity high sensitivity microphone for easy control Special driver design allows more compact size for greater in-ear comfort. Tight, accurate bass with crystal clear high frequency detail at all listening levels. 85%+ response accuracy--most accurate sounding noise-isolating ear phones in this price class High degree of noise isolation enables lower-volume listening, protects hearing. The free Awareness! by Etymotic app that was offered with iOS-compatible headsets has been discontinued; however, a Pro version with extended features of the original app is available for purchase in the app store. 8mm neodymium moving coil drivers with ACCU-Chamber technology that acts as a 3-band equalizer to enhance response accuracy and refine mid-range and high frequency sound quality.