mini speaker with built in amplifier 1.Phone,MP3,iphone,PCspeaker 2.In battery and external ... .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 ... PCS40HQ18,310 PCSImage: SU-22 mini speaker with built in amplifier FM,clock,alarm