Features:1. Compact and mini-sized design,easy to take along with.2. Built in microphone, supports handsfree function.3. Enable you to enjoy music and voice in the wireless comminication multimedia or music player wirelessly with a companion Bluetooth Stereo headset.4. It is very easy to control,plug and play.With high strong signal ,the transmission distance up to 10M.5. There and a few colors for you to choose. If you have any question about our products, please contact us.Specifications:Size: about 6x2x0.8cmSupported profiles: A2DP, AVRCPThe receiver distance: about 10m(Accessibility)How to Use:1. Insert the receiver into the speaker's USB interface.2. Open the wireless communucation enabled mobile phone (or computer), and search the surrounding bluetooth devices to find a device called BT-DONGLE and then its' pairing code is 0000(if asked),after the pairing is successful, the led light will slow down.3. Then you can select the music through wireless communucation from a cell phone or computer, a great music will play from speaker.includes:1x Audio Stereo Receiver