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.