Features: 1) Intuitive hook switch and hand free keys to answer/end Skype TM calls 2) Easier full function keypad to make/receive Skype TM calls 3) Adjustable ring volume for incoming Skype TM calls 4) Acoustically isolated speaker and microphone to eliminate echo 5) DTMF dial tone for dialing the extension numbers 6) Full-duplex communication with crystal clear speech 7) No external power/sound card required 8) LCD display and LED indicator 9) Additional software to interact with Skype TM seamlessly