... to match a bluetooth 1.1/1.2 edition standard,Wireless communicationheadphone,According to point to point agreement of bureau ... area net.,Conjecturestring line Port,Match a bluetooth1.1/1.2 edition standard Class2 ... .1 standard,LED statusindicator , Inside Place antenna,Wireless LAN:support 7 ports,Wireless conjunctiondistance between10-20M Frequency band:2.4Ghz ISM ...