Detailed Product Description Combined two function of FM radio and earphone. Use earphone to listen to MP3 ... no battery support. It can also used as FM radio, you can listen to the FM, which the range ... shoulder strap, you just connect the buckle to the radio and PSP respectively, then the console can hang on ... button" to FM, then you can listen to FM radio. Insert it in the MP3and PSP socket ,turn the" ...