Product Name: Skype USB PhonesModel Number: CU-501Place of Origin: ChinaFeatures: 1) USB2.0 supported 2) Supports SIP, H.323 and MGCP 3) Supports Skype, MSN, X-pro, X-lite, Net2phone, eyeBeam, Firefly, SJphone, StanaPhone and Noodle softphone 4) Easy to use like mobile phone 5) 16 bits USB sound card inside 6) No USB driver needed for Win98 SE / ME / 2000 / XP / Mac OS 7) Echo cancellation, noise reduction, full duplex communication 8) Adjustable volume for handset and ring in-call 9) PC-to-PC and PC-to-phone operation 10) Power requirement: USB bus powered 11) Interface: 1 x USB2.0 connection 12) Connector type: USB type A, slave 13) Dimensions: 128 x 45 x 19 mm 14) System requirement: a) P3 with 400MHz CPU or better b) USB interface c) 64MB of RAM or more d) 10MB free hard disk space or more e) Network: LAN, ADSL, ISDN, 33.6k modem or better 15) Colors available: silver, light blue (new), light green (new) Inner packing: Box size: 155 x 131 x 41mm Outer packing: 40pcs/ctn Carton dimensions: 420 x 333 x 283mm G.W.: 9.5kg