Change the traditional Car Stereo systems and Home Audio System into Bluetooth-enabled ones.Easy to pair with Bluetooth-enabled smart phones, laptop, tablet or MP3 / MP4 player, etc.After paired, you can listen to music form your phone, laptop or MP3 without the hassle of cables.With a HD miniphone, and uses the noise cancellation technology.Its hands-free function will bring you much convenience and let you keep safe during drive.Simple wireless connection to existing audio devices, compatible with any stereo line input.Equipped with a mini USB charging port, can be easily charged by computer or any other device with USB interface.Sleep mode for energy saving.Use compact portable design for easy carry.Applications: Car Stereo systems, Home Audio System, headphones, etc.Bluetooth 3.0 +EDR, class 2Support s A2DP stereo profile and HFP profileSupport DSP, Auto pairing.3.5mm stereo inlet socketUSB cable colors are random and do not accept the specified colorsColour: Blackmaterial: plasticPackage Contents:1 * Bluetooth Receiver1 * 3.5mm Connector1 * USB Cable1 * English User ManualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.