Support signal switch directly. Support USB, TF Support bluetooth (Bluetooth3.0 ) (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, , fast forward, fast rewind, volume, EQ, play / pause, stop, single repeat, mute, shutdown and direct election. Support Bluetoot PREV, , 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 power off. colour:black material:ABS size:108 * 25MM Package Contents: 1 * decoder board 1 * remote control 3 * lines Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.