1:FM Transmitter for iPhone&ipad 2:Memorizes up to 4 frequencies 3:have CE,FCC,ROHS approved Fm transmitter for apple iPod accessoryBEL-030H Product features ... CE,FCC & RoHS approvel Compatible with: Work for iPhone 3GS,iPod nano 5th generation, iPhone 3G,iPhone,all iPod models(Incl.iPod nano 3rd & ... Ext.809Mobile: +86 15999568183Ms Laura New Mini Portable mp3 fm transmitter for iPhone 4 3G 3GS iPod