mini speaker with built in amplifier 1.Phone,MP3,iphone,PCspeaker ... 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 ... PCS40GP15,078 PCS40HQ18,310 PCSImage: SU-22 mini speaker with built in amplifier FM,clock,alarm