Compucessory CCS 55222 Light Weight Multimedia Stereo Headset Stereo headset is lightweight and comfortable to wear for use with multimedia, gaming and telecommunications systems. Quality 27mm Mylar cone driver unit delivers full, rich, stereo sound. Noise-canceling boom microphone ensures clear communication in noisy environments. Headset offers in-line volume control, microphone mute switch, adjustable headband and 6' cord with two 2.5mm plugs. Headphone frequency response is 20-2 kHz/20-11 kHz, and the microphone sensitivity (at 1 kHz) is 114dB/-59dB.