1,Bluetooth 5.0 chip supports long-term music playback and stable Bluetooth connection 2,It can also be used while charging, which make it more convenient. 3,With an embedded echo cancellation microphone, you can easily switch between music and phone with just one button. 4,Support Bluetooth hands-free calling and A2DP stereo 5,Support answering, hang up, reject, call back, etc. 6,Support for echo cancellation and noise suppression (CVC) technology during calls 7,After disconnecting for 5 minutes, the product automatically shuts down. 8,When the mobile phone calls, press the key once to answer the voice call. 9,After the call is completed, the music playback status is automatically switched back. 10,Press and hold the button 'and' for the next song, short press to increase the volume. 11,Press and hold the button '-' for the previous track, short press to decrease the volume. 12,Connect this Bluetooth music receiver to your home stereo or car stereo using the supplied audio adapter 13,When two mobile phones are connected to the product at the same time, manually suspend one of them, and after switching the music for 5 seconds, you can switch to each other.