... 2.Built-in-polymer battery 3.Robot big sound small speaker 2012 hot sell mini speaker,card speaker, big ... sound small speaker TF card reader,FM Radio, Good Bass effectCompact ... you enjoying good musicON/OFF buttonCompatible with computer,PC,notebook,Iphone,ipad,ipod,etc.. 1.Dimension90*60*102mm2.Output ... hot sell mini speaker,card speaker, big sound small speaker