Features: 1) Compatible with VoIP (voice over Internet protocol) solution such as Skype 2) Works as microphone and earphone with Yahoo Messenger, MSN Messenger and MS NetMeeting 3) Hot-key functions to operate Skype software as easy as dialing a normal telephone 4) Echo-cancellation for better sound quality 5) 9 types of ring tones for incoming call alert 6) Use dot matrix LCD module (128x64). 7) Supports multi-language 8) LCD backlight turns on while receiving a call or any key is pressed 9) As a speaker to broadcast music from PC 10) LCD to display caller ID, contact list and calling list (missed, incoming, outgoing) 11) Compliant with USB 1.1 specification 12) No additional power adapter required 13) Display Skype out balance System requirements: 1) Computer with an available USB 1.1 port or higher 2) Windows98 SE/ME*/2000/XP (All use Windows built-in audio driver) 3) To use Skype with the USB phone, your computer must meet the following minimum system requirements: a) PC running Windows 2000 or XP b) 400MHz processor c) 128MB RAM d) 15MB free disk space on your hard drive e) Internet connection f) With provided API installed g) Skype doesn\'\'t support Windows 98SE/ME. Under these systems, the USB phone only works as an audio input/output device and can be used with an instant communication software, e.g., MSN Messenger and Yahoo Messenger h) The requirements are subject to Skype software. For the latest requirements, please visit the Skype website