mini stereo speaker 1.Cell phone, MP3,ipod, iphone,PC speaker 2.In battery and external battery slot 3.FM,Clock, ... Alarm SU-12 built in rechargeable battery mini stereo speaker Description:1.Mini stereo speaker support any MP3 music from SD/MMC/USB 2 ... .Perfect speaker for your cell phone,MP3,MP4,IPOD,IPONE,laptop ...