Earphone noise

Labtec Axis-502 Deluxe Stereo Headphones w/Boom Microphone,  Volume Control & 3.5mm Jacks (Black) Specifications Specially Engineered for Comfort and Durability! This  Labtec Axis 502 Deluxe Stereo Headset  is perfect for all  Voice-Over-IP,  Internet Gaming   & Voice Chat,  Video Conferencing  and  Speech Recognition  applications. With an  adjustable headband  for superior comfort and  soft foam ear pads, you'll be able to wear it for extended periods of time! The earphones feature  premium 40 mm drivers  for intense stereo with CDs, MP3s, and games. An  integrated volume control and "pop-less" mute switch  offer convenient audio adjustment. The  ambidextrous design  allows for the microphone to be placed on either the left or right side. The  MicroNCAT-2 Microphone  is unobtrusive and filters out background noise for supreme voice clarity. The microphone boom's  "double coil" design  firmly holds the mic in an ideal position for highly accurate speech recognition. Order your  Labtec Axis 502 Deluxe Stereo Headset  today! Labtec Axis 502 Deluxe Stereo Headset General Features: Semi-Open Headphone Form Factor Binaural Headphone Technology MicroNCAT-2 Noise Canceling and Amplification Technology Microphone Mute Switch Headphone Volume Control Infinite-Axis Uni-Pivot Earphone Design Ultra Soft Replaceable Ear Pad Foam "Pop-less" Microphone Mute Switch Miniature Microphone Ambidextrous design allows Microphone to be used on either side Replaceable Soft Foam for Microphone Protection 8-foot shielded cord Premium 40 mm drivers Gold-Plated 3.5 mm color coded jacks (PC 99 Specification) Microsoft Windows Approved Frequency Response: Headset 20-20,000Hz, Microphone: 100-16,000Hz Sensitivity: -59dBV/μBar, -39 dBV/Pa +/-4dB Off-Axis Noise Canceling: -30dB @ 250Hz     Includes Labtec Axis 502 Deluxe Stereo Headset Headset/Boom Mic User's Manual