Quality 36 mm neodumium ear-phone delivers a full rich sound Soft foam ear-pads Noise canceling microphone helps eliminate background noise Gold-plated 3.5 mm connectors Handy in-line volume and microphone volume controller Interchangeable color foam pads The stereo AHS423's behind-the-neck design offers high quality sound, fits comfortably and doesn't mess up your hair. Interchangeable color foam-pads included.