... .Robot big sound small speaker 2012 hot sell mini speaker,card speaker, big sound small speaker TF card reader,FM ... .Dimension90*60*102mm2.Output RMS6w, THD=10%3.Speaker Power4Ω/2W4.Frequency Response150Hz---18KHz (+/-3dB)5.Signal- ... 1)Support TF,and FM Radio 2)With line in function,can switch-in Notebook PC,MP3, ... ratio of power amplifier:>>80 db 7)Loud speaker:1.77 inch (external diameter 45mm) 8) ...