Specifications:Simply connect your speaker with it, immediately transform your speakers into a fashionable wireless bluetooth-compatible speaker.Mini size, the feature of portable can let you carry them to anywhere you want.It could be paired to any bluetooth-compatible enabled devices.Removing troubles of wired connection, through the wireless connection and transmission, the user can enjoy a high fidelity music at any place indoor by wireless control.How to Use:Connected to SpeakerThe first way: When the speaker does not have a USB interface, plug the bluetooth-compatible into a charger with a 5V USB port and connect the audio cable to the AUX port.The second way: the speaker has a USB port that plugs the bluetooth-compatible directly into the speaker USB port and then connects the audio cable to the AUX port.PairingTurn on the bluetooth-compatible function of the mobile phone (or computer), search for the surrounding bluetooth-compatible devices, find the device named H-163 in the search results and match, the pairing password is 0000. The pairing is successful and the indicator light on the bluetooth-compatible receiving device is slow.After the pairing is successful, play the music in the phone, then select the music played by bluetooth-compatible in the submenu and play the beautiful music from the speaker.Type: USB bluetooth-compatible Audio ReceiverMaterial: ABSBluetooth Version: V4.2Features: Portable, bluetooth-compatible Receiver, Easy to UseSize: 5.5cm x 2.5cm x 1cm/2.17" x 0.98" x 0.39" (Approx.)Notes:This bluetooth-compatible audio receiver must be used through AUX cable its USB port is just for power supply, it will not work if directly plug it in to a USB port.Due to the light and screen setting difference, the color of item may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x USB bluetooth-compatible Audio Receiver1 x AUX Cable