* USB Interface Plug and Play(PnP). Simply insert this USB-Phone handset into your PC USB port, you can make and receive calls. No external power/sound card required.

* This USB-Phone handset provide Echo-Free, High quality for full duplex communication,

* The USB-Phone handset provide Optional ITSP Application Software with Credit for PC

* This USB-Phone is compatible with all Internet telephone software applications, such as MSN, Yahoo Message, Skype, Google Talk, Net2Phone SJPhone, VoipBuster, X-Lite, EyeBeam, Sipgate, DialPad, Firefly, Nortel IP i2050, Voiceserve, Vonage Ubiphone, WWTelcoPhone, * VoipStunt, Vbuzzer

* This USB-Phone has Built-in Driver, no need any additional driver in Windows

* Specifications

* Dimensions 198mm* 48mm* 50mm

* Weight 500g

* Physical Connectors One USB Port

* Cabling USB B-type connector

* Standard Support Compliant with USB 2. 0 Full Speed Operation

* Compliant with USB Audio Device Class Spec V 1. 0 Compliant with USB HID Version 1. 1

Operating Humidity 5%-95% RH

* Operating Temperature 0 ~40 degree

* Sampling Rate 48K/44. 1Khz for both Playback and Recording

* System Requirements

* Pentium MMX 300MHz or above, with USB Interface, minimum 128MB RAM or more

* Broadband or 56Kbps analog

* Microsoft Windows 98/2000/XP operating system.