Music Sky Fashion Portable Mini Speaker for Micro SD TF Card MP3 MP4 Player IPod PC Laptop Blue color New Fashion Portable Mini Music Sky Speaker for Micro SD TF Card MP3 MP4 Player IPod PC Laptop Product is compatible with micro SD TF Card Buit-in FM Radio.Frequency Response: 150-18000H. connect MP3 MP4 Player IPod PC Laptop and other audio devices to play music Output : RMS6W(3W+3W)THD=10%