... KITColour Black and white(Other colour can be customized)Frequency FM75.5,FM79.5,FM87.5,FM87.9,FM100,FM107.5,FM107.9 ... be customized.Compatble iphone 4/3GS/3G/IPOD/IPAD,also availbe for the cellphone or MP3/MP4/MP5 with 3.5mm ... auto play again once the call off. 6. Compatible with all 3.5mm or 2.5mm audio connector cellphone ... 200mA.10.Working time:10 hours(Charge 1 hour) FM Transmitter for iphone ipod