Feature&Specification Support Skype Standard USB1.1 connector Built-in 16 bit sound card Dual channel sound effect controller, available to connect external stereo earphone + MIC Built-in 20 KHz bandwidth loudspeaker LCD backlight four row display Available to be used as "USB sound card + speaker cabinet" under hands free mode. Mute, Hands free function User defines ring tone Multiple languages display Friend list display, on-line friends display Inquiry of missed call/received calls/dialed calls and the conversation time Statistic of Missed calls Call ID display Directly dial Skype, Skypeout number Redial/dial back function Replacing mouse to operate SKYPE software in computer Skypeout balance display Humanized operation panel, close to mobile phone operation mode System Requirement Windows 2000 or XP Available USB port (1.0, 1.1 or 2.0) Skype version 1.3.0.xx or higher must be installed Operating requirement Operation temperature: 0 to 40 degree ( 32 to 104 degree F) Storage temperature: -30 to 65 degree ( -22 to 149 degree F) Humidity: 10 to 90% no dew Interfaces USB port ---- 1 X USB1.1 Port connect to PC