... 2,LED indication 3,128-bit secure encryption usb bluetooth dongle1,Bluetooth Dongle with different colors2,LED indication3,128-bit ... secure encryption Features:usb bluetooth dongle v1.2Compliant with Bluetooth V2.0 specificationClass 1 operationPowered by ... and audio profileSystem requirement: Notebook PC with USB port, Windows 2000, XP and Vista OS usb bluetooth dongle