1The decoder has 4 buttons with a power switch, and has the functions of card reading USB/memory card, FM radio, and AUX. 2It supports USB/SD/FM/LINE/automatic switching, andontains MP3/WMA/lossless WAV song decoding chip. 3The decoder supports folder playback (convenient for different music categories to choose and play: in the playback state, long press the mode MODE on the remote control, the screen will display F01 and F02 at the same time. 4Support 0USB/SD card switching, previous song, next song, volume adjustment, EQ, play/pause, single/full song/random/folder repeat, mute, shutdown, direct song selection. Support for FAT file system. 5The MP3 decoder board supports MP1Layer3, MP2Layer3, MP3Layer3 version of songs. MP3 songs 32320kbps songs. Lossless WAV is below 1411kbps for two channels. 6Support the poweroff memory function, which can memorize the songs and volume played before the poweroff. 7Support loop mode playback (long press the player): single loop (ONE)/folder loop (FOL)/full loop (ALL); if it is pressed to (FOL) in the current folder, it will only be in this folder The whole song is played in a loop. 8Suitable for 0, 1 or 1 speaker power amplifier board. Turn on the AUX audio input status, if there is a card on the product or the U disk is powered on, it will play music directly.