mini speaker with built in amplifier 1.Phone,MP3,iphone,PCspeaker 2.In battery and external battery slot 3.FM,Clock,alarm SU- ... 22 mini speaker with built in amplifier FM,clock,alarm Description:1.Mini speaker built ... ,539 PCS40GP15,078 PCS40HQ18,310 PCSImage: SU-22 mini speaker with built in amplifier FM,clock,alarm