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 5, VOLand or VOL-:Rotate the volume up to the right, rotate the volume down to the left 6, MODE: switch between USB or TF or FM or AUX or 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 or 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 song long press is to fast forward double click to switch to folder 13, PREV: short press is to select the previous song long press is fast back double click to switch folder Color:black Material: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.