Usage Tips:Features: 1.Convert traditional car stereo system and home audio system into bluetooth-enabled ones. 2.Easy to pair with bluetooth-enabled smart phones, laptop, tablet or MP3/MP4 player, etc. 3.You can listen to music from your phone laptop or MP3 after successful pairing without hassle of cables. 4.Internal high-definition microphone, adopt noise cancellation technology. 5.Handsfree function will bring you much convenience and improve driving safety while calling. Specification: Features: Convert traditional car stereo system and home audio system into bluetooth-enabled ones. Easy to pair with bluetooth-enabled smart phones, laptop, tablet or MP3/MP4 player, etc. You can listen to music from your phone laptop or MP3 after successful pairing without hassle of cables. Internal high-definition microphone, adopt noise cancellation technology. Handsfree function will bring you much convenience and improve driving safety while calling. Simple wireless connection to existing audio devices, compatible with any stereo line input. The micro USB charging port enables it to be easily charged by computer or any other device with USB interface. Sleep mode for energy saving, compact and portable design for easy carry. Widely applicable to car stereo system, home audio system, headphone, etc. Specifications: Condition: Brand Material: ABS Color: Black Specification: Bluetooth Version: Bluetooth 3.0 Transmission Distance: 10m Working Time: 4 hours Package Weight: Approx.31g/1.1oz Package List: 1 * Bluetooth Receiver 1 * 3.5mm Socket 1 * USB Cable 1 * User Manual PackageList: