Key Feature: Phone's 160-foot(50-meter) radio range enabling you to talk away computer. 1. Fashion look and human design. 2. Large graphic LCD and blue back-light. 3. Contact list and calling history in any language easily reviewed on handset. 4. Caller ID function. 5. With speakerphone built in base, ideal device for conference call. 6. Base works as charging station for handset. 7. Noise reduction and digital echo cancellation. 8. Both base and handset ringing for all incoming calls. 9. Auto- ed RF channel for improved voice quality Specification: Soft-phone compliant: Skype, VoipBuster, MSN Messenger, Yahoo! Messenger, SJphone Hardware: 1. Radio range: 50 meters (160ft) 2. Standby duration: >100 hours 3. Talking duration: >10 hours 4. Battery: 460mAh(Li-battery) 5. USB charged, no external power required. 6. Driver and sound card built-in. System Requirement: 1. Microsoft Windows XP, 2000 SP4 or Vista 2. Minimum 400 MHz processor 3. 128MB RAM and 15MB free disk space 4. Open USB 1.1 or 2.0 port 5. Any broadband Internet connection