Features: 1) 2.4G USB wireless phone for Skype 2) 2.4GHz ISM Band, suit for Europe, USA, and Japan 3) Hand free with digital echo cancellation 4) Large graphic LCD with blue backlight 5) Review Skype contacts and call list on handset LCD 6) Both base and handset ring for all incoming calls 7) Multi-language caller ID display feature 8) Auto-select RF channel to improve the quality of voice 9) Driver and sound card built-in. Technical data: 1) Standby time: more than 100 hours 2) Talk time: more than 10 hours 3) Radio range: 10 meters (32ft) 4) Battery: 250mAh (Li-battery)