Product details Model: PL-801 Introduction: Features: PC-to-PC and PC-to-phone operation No external power required With LCD and LED display Complies with H.323, MGCP, SIP protocol Full duplex communication Customized hand phone casing designs available Echo cancellation, noise reduction Adjustable volume for handset Support SKYPE MSN QQ eyebeam yahoo UC X-liter Hardware: No external power required USB power LED indicator Interface: 1 USB interface to PC System requirement: Windows 2000 or XP 400 MHZ processor and free USB1.1 or USB 2.0 port 128 MB RAM and 15MB free disk space Internet connection Packing: L.W.H: 8.5*4*16CM 47.4g (1 pcs colorful carton) 62*26*37CM 1500g (94pcs) Weight: 47.4g*94+1500g=5927.4g