The powerful coil drivers on these Klipsch S4 II in-ear headphones feature a wide frequency range for amazing sound quality. Product Features: Noise isolation keeps outside nuisances to a minimum. In-line mic and remove are compatible with most iOS devices. Patented oval ear tips ensure unbelievable comfort. Flat cables resist tangling. What's Included: 4 pairs of ear tips in various sizes Protective carrying case Product Care: Manufacturer's 2-year limited warranty Product Details: 1.8mm mini stereo plug Frequency response: 10Hz - 19kHz Impedance: 18 ohms Sensitivity: 110 dB Model numbers: White: 1015140 Black: 1014811 Promotional offers available online at Kohls.com may differ from those offered in Kohl's stores. Size: One Size. Color: Black. Gender: Unisex. Age Group: Adult.