Logitech Ultimate Ears 200vi Noise-Isolating Headset (Black)

Two-In-One Functionality
Calls + music:
No need to switch earphones and headset for your music and phone calls – you'll get detailed sound, crisp calls and noise-isolation all in one.

On-cord controls:
Answer your calls, change tracks and adjust volume** without taking your phone out of your pocket. The integrated microphone and remote are positioned conveniently near your face to create a more natural feel when talking or controlling music.*

Frequency response:
Frequency response of 20Hz–20kHz accurately and authentically reproduces your favorite music and phone calls.

Noise-isolating microphone: 
Blocks out background noise so you get heard.  Technically, that's -58dBV/Pa sensitivity and a frequency response of 200Hz–10kHz (-10 dB).

Secure and light:
Earphones are lightweight (12g) and sit flush and securely in your ears, making them ideal for working out or hanging out.

Durable, sweat-resistant design:
Keeps your headset looking and sounding great.

Protective carrying pouch:
Soft carrying pouch safely stores your headset and slips easily into a pocket.