Features: Easy To Operate: Simply connect your speaker with our device, immediately transform your speakers into a fashionable wireless Bluetooth-compatible speaker. Wireless Play: Removing troubles of wired connection, through the wireless connection and transmission ,enjoy a high fidelity music at any place indoor by wireless control. Perfectly Compatible: Our products can be compatible with nearly 95% of mobile phone or computer on the market. Support for iPhone and most kinds of smart phones. Portable design: with mini size ,the feature of portable can let you carry them to anywhere you want. Operation steps: Step one: For No USB port Speakers: Supply power to the device by connecting charger with 5 V USB interface, then connect the Speaker"'"s AUX port with the audio cable. For Speakers with USB port: Connect the device with speaker"'"s USB port directly ,then then connect the Speaker"'"s AUX port with the audio cable. Step two: Turn on the Bluetooth-compatible function of computer,mobile or other device which has Bluetooth-compatible function, searching for the H-163 device to connect and input: 0000 for matching when the device is in the matching mode. After matching success ,the indicator light turn to twinkle slowly.Then you can use for iPhone and other bluetooth-compatible transmitter playing the music. Package includes: 1 x USB Bluetooth-compatible Audio Music Receiver (Speaker not included, just for reference) 1 x 3.5mm Audio Cable Note:We don"'"t offer retail package,but we will pack it well before shipped out.