USB Bluetooth Audio Dongle which works remotely with Bluetooth (A2DP) to provide digital audio streaming for active listeners. This device enables users to use their Bluetooth headphones/speakers with their non-Bluetooth stereo systems or Notebook/Desktop. For a non-Buletooth stereo system, all you need to do is plug the Bluetooth Audio transmitter's built-in standard 3.5mm stereo audio plug into the audio out jack of your audio device - such as a MP3 player, Notebook...and etc. Using in a PC, you just connect it with your PC via USB cable. Then, your PC will become a Bluetooth enabled audio transmitter. It is a great add on accessory for your home entertainment A/V System.