Features: 1. Free PC:With LCD dot matrix display,all the Skype titles such as Contacts,Dial,Call list could be read on it and could be operated using the keypad; 2. Support 10 types of languages displaying, such as Chinese, Simplified Chinese, English, German, France, Japanese, Korean lan guage and so on. 3. With back light, more clear; 4. With ringer,rings able and volume adjustable 5. PC-to-PC and PC-to-phone operation ; 6. Driver built-in, plug and play; 7. USB2.0 compatible; 8. No need sound card; 9. No external power required 10. Complies with H.323, MGCP, SIP protocol;