mp3 earphone with FM

A. Installation and use
1.Use a piece of battery(SIZE AS 2032)
2.Install the battery well and truly inaccordance with either ends of anode cathode as shown.
3.Stir the FM and then listen to the frequency modulation broadcast the switch.
4.Stir the CD the switch, pass radio pwoer suply.
5.Listen to MP3:
insert the plug if earphone into the MP3 socket switch CD the radio then enjoy stereo music from your MP3.
B. Radio frequency: 87.5-108Mhz.