Specification: Bluetooth 3.0 +EDR, class 2 Support s A2DP stereo profile and HFP profile Support DSP, Auto pairing. 3.5mm stereo inlet socket Transmission Distance: 10m Work Time: 8 hours Color: Black Features: 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 Microphone, 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 micro 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. Package List: 1 * Bluetooth Receiver 1 * 3.5mm Connector 1 * USB Cable 1 * English User Manual