1Multi Format Support: Strong compatibility, this decoder board supports APE, FLAC, WAV, WMA, MP3, FLAC lossless music formats. 2With Card Slot: With USB and Memory Card (not included) slot, allowing you to play music from external U disk, Storage Card, or use FM radio. 3Memory And Display Function: With memory function and LED display, it is more convenient for you to operate and use the BT decoder board. 4Multi Functional: Support Memory Card, U disk switching, song selection, volume adjustment, EQ, play, pause, stop, mute, shutdown, direct song selection. 5Call Reminder: Car stereo hands free call BT recording module, support USB, Memory Card, BT, FM switching, with conversion reminder and caller number reminder.