Support signal switch directly. Support USB, TF. Support bluetooth (Bluetooth 5.0 ) (after been paired with mobile phones can realize wireless music play). Support USB / TF / Bluetooth/FM / LINE switch. MP3 / WMA, WAV lossless music decoding chip.Support USB / TF card switch, PREV, NEXT, fast forward, fast rewind, volume, EQ, play / pause, stop, single repeat, mute, shutdown and direct election. Support Bluetoot PREV, NEXT, volume, EQ, play/pause, mute, turn it off. Support FAT16, FAT32 file system. Support for MP1 Layer3, MP2 Layer3, MP3 Layer3 version of the song.Support 32-320 KBPS MP3 . Support power off memory function: memory play and volume before power off. note: Different batches may have different appearance, which does not affect use. Material: plastic+metal colour: Black Package Contents: 1 x MP3 Decoder Board 1 x Remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.