... battery and external battery slot 3.FM,Clock,alarm SU-22 mini speaker with built in amplifier FM,clock,alarm Description ... music from SD/MMC/USB 2.Perfect speaker for your cell phone,MP3,MP4,IPOD,IPONE,laptop and all audio devices ... *49cmG.W24.5KGS20GP7,539 PCS40GP15,078 PCS40HQ18,310 PCSImage: SU-22 mini speaker with built in amplifier FM,clock,alarm