... battery slot 3.FM,Clock,alarm SU-22 mini speaker with built in amplifier FM,clock,alarm Description:1 ... .Mini speaker built in amplifier support any MP3 music from SD ... /MMC/USB 2.Perfect speaker for your cell phone,MP3,MP4,IPOD,IPONE,laptop ... PCS40GP15,078 PCS40HQ18,310 PCSImage: SU-22 mini speaker with built in amplifier FM,clock,alarm