FEATURES: Wirelessly transmit music or phone call from Bluetooth mobile phone to the car FM stereo system. Switch to Hands-free mode automatically from music playing status when receiving calls. Built-in Microphone. Dual USB output to charge for mobile phones and other devices(Output 5V/4.8A). USB-C with PD3.0 feature. QC3.0 fast charge. Bassboost Advanced Dynamics feature. With this function you get much dynamics from your sound system. Strong and elegant design with LCD frequency display.