"*Fully functional keypad enables you to make/receive SKype/QQ calls even easier *Rings loudly on an incoming Skype/QQ call. *Full-duplex communication with crystal clear speech *USB Interface PnP. No external power/sound card required. *Streamlined and fashionable design similar to a mobile phone. *Supplied Skype@phone software enables the PhoneSkype EX-B to seamlessly integrate with Skype/QQ. *DTMF dial tone enables you to dial extension number when SkypeOut *LCD display and LED indicators. *Also compatible with other PC-based softphone applications, such as MSN, Yahoo Message, Xten, Dialpad, MediaRing, Net2phone, etc. "