Coloud C19M Headphones In Ears with Microphone & Remote - Green Microphone/remote function so you can answer those calls that come in and interrupt the sound of music in your ears Remote skips pauses, and replays tracks on MP3 Click remote once, pauses song Click remote twice- skips track, click remote 3x's starts song over Very clean sound. Designed in Sweden Stylish and Functional, theses in Ear headphones Deliver a great sound and allow you to talk on the phone while listening to your favorite Music. Just pick your Color. COMES WITH SMALL MEDIUM AND LARGE CAPS FOR PERFECT FIT. Model C19M Driver Unit: 9mm Frequency : 20 Hz - 20,000 Hz Impedance: 16 ohms Sensitivity: 107 dB Microphone type - Unidirectional electret Max Input Power: 5 mW Plug: 3.5 mm