Klipsch Reference S4i Premium In-Ear Noise-Isolating Headphones with Microphone (Black) (Discontinued by Manufacturer) Advanced 3-button mic and remote system Full music and/or voice control on select Apple products* Patented oval ear tips for unbeatable comfort 360 degree mic yields highly intelligible phone calls Durable home theater style cables with built-in strain relief Superior noise isolation and amazing bass response