This APP realizes switching on and off, adjusting volume and sound effect, converting LED lamp and switching mode by scanning and automatically connecting Bluetooth audio on-board. In radio mode, it can switch frequency band, save channel and select platform automatically; in U disk and SD card mode, it can get the current song name, play pause and up and down songs; in BT mode, Bluetooth audio can play music on mobile phone. App can also call directly and jump to navigation software.