Brief product introduction: The bluetooth music receiver (hands-free) is a high-tech wireless product that can receive music from a mobile phone or transmitter with bluetooth. This music receiver can be used for almost any audio receiver with an input jack, including car devices. Listen to music from your smartphone and MP3 on your home speaker or car audio system. Enjoy melodious car music, call solutions, use your smartphone to make calls and enjoy music through car audio. Talk hands-free, enjoy music stored in your phone or even internet radio with just one touch. The product comes with a built-in echo-canceling microphone that easily switches between music and phone with one button. Technical Parameters: 1. Bluetooth V4.1+EDR, long transmission distance 10m 2. Support bluetooth hands-free calling function 3. Support bluetooth A2DP 4. Frequency: 2.4 GHz 5. 3.5mm stereo input jack 6.sleep mode, power saving 7. Power: Charge with mini USB cable 8. Work time: 3-5 hours of continuous work