Genius HS-04SU (noise-canceling microphone) Headband headset with Noise-canceling microphone. In-line volume control. Genius HS-04SU Stereo Headset General Features: Gray and silver color Headband stereo headset Adjustable noise-canceling microphone In-line microphone with mute function In-line volume control Great for use with MSN, Skype or other VoIP applications Works with an MP3 player or other audio device with a 3.5 mm audio jack 3.5 mm headphone and microphone jacks