mini speaker with built in amplifier 1.Phone,MP3,iphone,PCspeaker 2 ... external 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 ... 5KGS20GP7,539 PCS40GP15,078 PCS40HQ18,310 PCSImage: SU-22 mini speaker with built in amplifier FM,clock,alarm