Description: 1, USB interface: connect the U disk (maximum support 32GB);. 2, LED screen: digital displayi 3, MIC:support call and recording function; 4, IR:Infrared receiving module;<br><br>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 the REC button to start recording, 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 is to pause and play the switch; long 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 is to select song; long is to fast forward; double click to switch to folder; 13, PREV: short is to select the previous song; long is fast back; double click to switch folder; Color:black Material:ABS<br><br>Package Contents: 1 set of MP3 decoder<br><br>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.