Royaldeals USB Wireless USB Adapter(White)

Insert the receiver into the speaker's USB interface;and the other end connected with the 3.5mm audio cable to the receiver and the LINE-IN interface of speakers. Open the Bluetooth-enabled mobile phone (or computer);and search the surrounding Bluetooth devices to find a device called find its pairing code is 0000;after the pairing is successful;the LED light will slow down. Then you can select the music via Bluetooth from a cell phone or computer;a great music will play from speaker.