* The music receiver(hands-free) is designed to receive music from mobile phones or transmitters that feature Bluetooth wireless technology. * The music receiver can be used with almost any audio receiver with an audio input jack， including auto-mobiles. * Listen to music from your smart phone or mp3 player on your existing home or car audio system. * To enjoy car music， call solutions， the use of smart phones to make calls and listen to music through the car stereo.* The product is embedded echo cancellation microphone. Using only one button， you can easily switch between music and phone.Contents of Package:1 x Bluetooth music receiver 1 x 3.5mm Connector1 x USB Cable1 x English User Manual