1Pair your phone or tablet with Bluetooth, and you can use your phone to play music through the car speaker. You can also listen to music from your phonetabletMP3 (they should have Bluetooth capabilities). 2Using Bluetooth 5.0 protocol, can also compatible with other versions such as 2.03.04.0, it can support common MP3 format audio, and also supports WMA, WAV, FLAC and other audio format decoding. 3Specially designed for music lovers, support DSD largecapacity transmission, stable data transmission between devices, fidelity. 4Supports highefficiency music transmission, Bluetooth 5.0 version, incoming calls can be answered, clear sound. 5High quality, more stable connection, remarkable performance, easy to operate, plug and play installation.