... via bluetoothDetachable panel,anti-theftFM Radio, Electronics PLL tuningCompatible MP3 WMA songID3(Folders name,singer name,album name,song name ... )Shifting FolderSD/USB Slot,compatible USB/SD/MMC FormatBuilt-in ClockReal color big LCD ... Digital Song Selection)Power Output:4x45WPower input:24 Voltage Bluetooth Car detachable MP3 WMA player USB SD Radio RDS S2020B