Chester Creek Headset with Microphone - USB Chester Creek Headsets are seriously good sounding and astonishingly well built, and the soft, comfortable cushioned headband adjusts to fit both children and adults With clear stereo sound and adjustable in-line volume control, these headsets are a great choice for computer labs and speech classrooms where students, or anyone can reduce distraction from outside sound. The sturdy, adjustable boom microphone has a high quality dynamic mic, not the low end condenser mic you find in other brands. Speaker Size: 40mm Diameter (1.6 inches) , Headphone Cup Noise reducing, ABS plastic for durability Chester Creek Headset features a cushioned headband, clear stereo sound, and volume control. Comes with USB plug.