The MK-510MV is a Headphone/Microphone system that combines sound listening and sound recording in one unit. The headphone system is really an around-the-ear studio monitor. The frequency range is from 20 to 20,000 Hz for clear stereo sound with extra bass. An in-line wired volume control is provided for adjusting the sound level to the headphones. The high sensitivity boom mic system of the MK-510MV is built with the headset for hands-free operating. Features Adjustable behind-the-head headband and foam ear cushions Adjustable microphone arm Compatible with all leading sound cards Volume control for sound level adjustment Stylish black-silver color Headphone Driver Unit: 30mm dia. dome Frequency Response: 20Hz - 20KHz Impedance: 32 OHMs Sensitivity @ 1KHz: 105dB -/+ 3dB Max. Power Input: 100mW Connection: 3.5mm Stereo Length of Cable: 7.5 Feet Microphone Directivity: Omni Frequency Response: 20Hz - 20KHz Impedance: 2.2K OHMs Sensitivity @ 1KHz: -58dB -/+ 3dB Operating Voltage: 4.5V Connection: 3.5mm Stereo Availability: Usually ships the same business day MK-510MVRegular price: $14.99Sale price: $5.25, 10/$47.50 Secure On-Line Ordering Site Tel: (888) 860-4416 Fax: (732) 416-8788 sales@pctekonline.com Business hours are from 10:30am to 7:00pm EST Monday to Friday 3 Kellogg Court Suite 11 Edison NJ 08817 Copyright (C) 1997-2011, PCTekOnline.com All rights reserved. Thank you for shopping at PCTekOnline.com !