V6 is the USB telephone specially designed for communication software. You can use the sound service of communication software such as MSN Messenger, Yahoo !Messenger ,AOL Messenger and Google talk ,only if you set V6 correctly. To install the corresponding API application is more superiors than ordinary microphone of earphone. You can easily use the Skype ,Yahoo BB with telephone button ,to choose from the telephone book or dialed directly. Furthermore ,it can further adjust the volume and use the voiceless function. In addition, you can have the feeling to speak on the phone with the progressive echo and noise avoiding technology.