1.Bluetooth v2.0 compliant.(compatible with V1.1 and V1.2) 2.Supporting both USB1.1 and USB2.0 standard. 3.Build-in antenna. 4.Lower power consumption. 5.Operation range: 0-100M(Bluetooth class 1). 6.LED status indicator. 7.Support: Windows 98/98SE/ME/2000/XP.