Check the listing for details. lab tec headset boom microphone mono 331 skype computer. Condition: New. Listed at 14.50 USD. 10C810 up for sale is a set of new labtec model mono 331 PC headset with microphone ideal for voice and video chat online gaming, speech recognition and more, MicroNCAT2 microphone filters out unwanted backround noise for clear comunications, comfortable headband and adjustable microphone for use on right or left side, single earphone allows you to hear whats going one around you. specifications , sensitivity -58DBV/Ubar , -38DBV/Pa +/-4Db frequency response headset 20-20,000 Hz microphone 100-16,000 Hz driver 30 MM off axis noise cancelling -30 Db @ 250 Hz 8 foot shielded cord with gold plated 3.5 MM color coded jacks, this head set comes without factory package but is a brand new unused item. buyer to pay shipping and packing of $4.50 to your USA location, see our store we have also brand new packaged units available, Thank you RWK .