The Verbatim Stereo Headset with Microphone combines superior sound quality lasting comfort and versatile functionality that make it perfect for plug-and-play use in a variety of applications.The headset s ergonomic design features an adjustable headband with soft foam covers on the earpads for long-lasting comfort.The rotatable microphone is easy to position for optimal speaking quality then swings up and out of the way when not in use. Specifications Connectivity Technology: Wired Cable Length: 5.74 ft. Sound Mode: Stereo Impedance: 32 Ohm Minimum Frequency Response: 20 Hz Maximum Frequency Response: 20 kHz Sound Pressure Level: 110 dB Host Interface: Mini-phone (3.5mm) Earpiece Design: Over-the-head Earpiece Type: Binaural Microphone Design: Boom Microphone Technology: Omni-directional Integrated Microphone: Yes Form Factor: Circumaural Weight: 0.5 lbs - SKU: ISTR399762