Stereo headset with unidirectional noise canceling mic: The noise canceling microphone is designed for reliable testing, speech, and other vocal use, in less than ideal environments. One size fits all: with an adjustable headband, easy to clean soft leatherette ear cushions, these on-ear headphones can be adjusted for Ultra comfortable fit on most any head size. Device Compatibility : PC's utilizing sound cards with separate audio and microphone jacks Dual plugs - easy to use: Uses two 3. 5mm plugs, one for the microphone, one for the headphones, perfect for computers with separate connections for each.