... Meters 4.System frequency---RF New 2.4GHz headphone 1.2.4GHz wireless, up to 10 meters away from your ... Way audio chat in Skype,MSN,Yahoo Messenger4.USB wireless transmitter dongle, plug,play,easy to use5.Simple set ... MP3/MP4 music through the line in of the headphone. SpecificationsProduct name : Wireless headphoneconnunication frequency : 2.4GHzsystem frequency :RFwireless communication range ...