Let ordinary speakers instantly become wireless bluetooth stereo audio music speakers, it could be paired to most bluetooth enabled devices, such as iPhone, iPad, Samsung Galaxy, HTC, and other devices. Features: Easy to Operate: Simply connect your speaker with our device, immediately transform your speakers into a fashionable wireless bluetooth speaker. Wireless Play: 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. Perfectly Compatible: Our products can be compatible with most of mobile phone or computer on the market. Support iPhone, iPad, iTouch and all kinds of smart phones. Portable Design: With mini size, the feature of portable can let you carry them to anywhere you want. Color: Black Bluetooth 2.0 + EDR Support A2DP V1.2 Powered by 5V DC Transmission Rate: 3 (Mbps) Transmission Distance: Up to 10m Power Supply Mode: USB-Power Size: 5.5 x 2 x 1cm/2.17" x 0.79" x 0.39" (Approx.) Operation Steps: For no USB Port Speakers: Supply power to the device by connecting charger with 5V USB interface, then connect the speakers AUX port with the audio cable. For Speakers with USB Port: Connect the device with speakers USB port directly, then connect the Speakers AUX port with the audio cable. Turn on the bluetooth function of computer, mobile or other device which has bluetooth function, searching for the device to connect. After matching success, you can use your phone to play music. Package Includes: 4 x 1 x USB bluetooth-compatible Audio Music Receiver (Mbps) 1 x 3.5mm Audio Cable 1 x User Manual