Mini speaker for iPhone 4 1)3.5mm stereo connect cable2.Small size 3)400 ma batteries 3) FM radio Mini speaker for iPhone 4 Model number:MA81231.This product is the portable individual motion sound,is suitable in the computer,PDA,the handset,MP4,the U plate,the SD card and soon… 2.Small size,travel,sports,recreation. 3.Uses D kind of digital power amplifier chip,low powerloss,high efficiency. 4. ...