Description:1, USB interface: connect the U disk (maximum support 32GB);.2, LED screen: digital displayi3, MIC:support call and recording function;4, IR:Infrared receiving module; 5, VOL+/VOL-:Rotate the volume up to the right, rotate the volume down to the left;6, MODE: switch between USB /TF /FM /AUX / BT;7, REC: long press the REC button to start recording, press the REC button again to cancel the recording function and play the recording file; recording than need to connect a storage device such as: U disk or TF card;8, PLAY/PAUSE: short press is to pause and play the switch; long press is radio FM automatic station;9, microphone interface;10, TF card slot: connect TF memory card (maximum support 32GB);11, AUX interface: audio input interface.12, NEXT:Short press is to select the next song; long press is to fast forward; double click to switch to the next folder;13, PREV: short press is to select the previous song; long press is fast back; double click to switch the next folder;Color:blackMaterial:ABS Package Contents:1 set of MP3 decoder 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.