... .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 ... /OFF buttonCompatible with computer,PC,notebook,Iphone,ipad,ipod,etc.. 1.Dimension90*60*102mm2.Output RMS6w, THD=10%3.Speaker Power4Ω/2W4 ... )Support TF,and FM Radio 2)With line in function,can switch-in Notebook PC,MP3,MP4,Ipnone etc.. 3)Charge Time ...