Bluetooth 4.0 Music Audio Stereo Receiver 3.5mm Adapter Dongle A2DP 5V USB Wireless for Car AUX Android or IOS Features: 1. Let ordinary speakers instantly become wireless Bluetooth stereo audio music speakers 2. Can be paired to any bluetooth enabled devices, such as mobile phone, laptops, speaker and Bluetooth audio transmitter. 3. Make music in the audio equipment play by wireless. 4. support Bluetooth V4.0andEDR. 5. support A2DP V1.2,VCRCP,AVDTP,HFP and HSP. 6. support Senior andio stereo. 7. Output: 3.5mm Audio interface. 8. Distance: 8-10 meter working distance. 9. Suport USB AUDIO and HID. How to use: 1. Plug the Bluetooth dongle into the USB sucket of the device with USB audio profile. 2. Turn on the audio profile ,the blue LED of the dongle shall be flashing. 3. Turn on the bluetooth player, search for ID: BT-DONGLE,then match. 4. If successfully paired, the content in blueto oth player shall stream through to the USB audio device. Package includes: 1 x Bluetooth audio adapter 1 x 3.5mm Audio Cable Note : this product comes without retail boxes, We put in a safe packaging