Specifications: 1) Supporting skypesoftware phone and SIP, H.323, MGCP protocol 2) Fully functionalkeypad enables you to make/receive calls even easier 3) Ringsloudly on an incoming skype call 4) Acoustically isolated speakerand microphone to eliminate echo full-duplex communication withcrystal clear speech 5) USB Interface PnP, no need driver, noexternal power/sound card required 6) LCD display and LED indicator7) Streamlined and fashionable design similar to a mobile phone 8)3 colors available (grey, silver and red) 9) 199 incoming call and199 dialed numbers 10) Free "let''s skype" software is included inthe installation CD or can be downloaded from website that enablesthe USB device to work with skype seamlessly 11) On "let''s skype"has 9 kinds of rings and volume adjustment 12) Also compatible withother PC-based soft phone applications, such as dialpad, gird-talk,MSN message, Yahoo message, stana phone, Voxbar, media ring,net2phone Inner packing: 1pc/color box Box dimensions: 17 x 14 x3.8cm N.W.: 240g Outer packing: 50 boxes/ctn Carton dimensions: 76x 41 x 18cm G.W.: 13.1kg