TelPal Corded Noise cancelling Monaural Headset with USB headset Adapter as Office PC headset For Computer/PC/Laptop Use Only For computer use only, not for the VOIP phones or telephones that have USB port. With volume control. It with perfect voice quality. Noise proof microphone, to increase the voice clarity.Easy to use; no need the installation driver, auto identify, Comfortable wear, compact appearance, human engineering design, Can be uninterruptible using.The headset clip can be stretched freely and comfortable wear. Microphone volume can be adjusted high and low on the headset cable. Detachable Leather ear pad and Mic cushion to keep headset clearn and sanitary